RLocusPlot Properties

Access root locus plot properties

Since R2024b

RLocusPlot properties control the appearance and behavior of root locus plots created using the rlocusplot function. By changing property values, you can modify certain aspects of the plot.

rlp = rlocusplot(sys);
rlp.FrequencyUnit = "Hz";

For more information, see Customize Linear Analysis Plots at Command Line.

Response

Responses — Model responses

RootLocusResponse object | array of RootLocusResponse objects

Model responses, specified as a RootLocusResponse object or an array of such objects. Use this property to modify the dynamic system model or appearance for each response in the plot. Each IOPZResponse object has these properties.

Model — Dynamic system

dynamic system model | model array

Dynamic system, specified as a SISO dynamic system model or array of dynamic system models.

When you initially create a plot, Model matches the value you specify for sys.

Before R2026a: Specify the dynamic system using the Responses.SourceData.Model property.

FeedbackGainSpec — Dynamic system

vector

Feedback gain values that pertain to pole locations, specified as a vector. The feedback gains define the trajectory of the poles thereby affecting the shape of the root locus plot.

If you specify FeedbackGainSpec as empty, the software automatically selects a set of positive feedback gains that produce a smooth plot.

When you initially create a plot, FeedbackGainSpec matches the value you specify for k.

Before R2026a: Specify the initial condition using the Responses.SourceData.FeedbackGainSpec property.

Name — Response name

string | character vector

Response name, specified as a string or character vector and stored as a string.

Visible — Response visibility

"on" (default) | on/off logical value

Response visibility, specified as one of these logical on/off values:

• "on", 1, or true — Display the response in the plot.

• "off", 0, or false — Do not display the response in the plot.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

LegendDisplay — Option to list response in legend

"on" (default) | on/off logical value

Option to list the response in the legend, specified as one of these logical on/off values:

• "on", 1, or true — List the response in the legend.

• "off", 0, or false — Do not list the response in the legend.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

MarkerStyle — Marker style

"none" | "o" | "+" | "*" | "." | ...

Marker style, specified as one of these values.

Marker	Description
"none"	No marker
"o"	Circle
"+"	Plus sign
"*"	Asterisk
"."	Point
"x"	Cross
"_"	Horizontal line
"|"	Vertical line
"s"	Square
"d"	Diamond
"^"	Upward-pointing triangle
"v"	Downward-pointing triangle
">"	Right-pointing triangle
"<"	Left-pointing triangle
"p"	Pentagram
"h"	Hexagram

MarkerStyleMode — Marker style selection mode

"auto" (default) | "manual"

Since R2026a

Marker style selection mode, specified as one of these values:

• "auto" — Automatically set the marker style based on the marker order of the parent chart object.

• "manual" — Manually specify the marker style order using the MarkerStyle property.

Dependencies

If you modify the MarkerStyle property, the value of the MarkerStyleMode changes to "manual".

Color — Plot color

RGB triplet | hexadecimal color code | color name

Plot color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

ColorMode — Color selection mode

"auto" (default) | "manual"

Since R2026a

Color selection mode, specified as one of these values:

• "auto" — Automatically set the color based on the color order of the parent chart object.

• "manual" — Manually specify the color order using the Color property.

Dependencies

If you modify the Color property, the value of the ColorMode changes to "manual".

LineStyle — Line style

"-" | "--" | ":" | "-."

Line style, specified as one of these values.

Line Style	Description
"-"	Solid line
"--"	Dashed line
":"	Dotted line
"-."	Dash-dotted line
"none"	No line

LineStyleMode — Line style selection mode

"auto" (default) | "manual"

Since R2026a

Line style selection mode, specified as one of these values:

• "auto" — Automatically set the line style based on the line style order of the parent chart object.

• "manual" — Manually specify the line style order using the LineStyle property.

Dependencies

If you modify the LineStyle property, the value of the LineStyleMode changes to "manual".

MarkerSize — Marker size

positive scalar

Marker size, specified as a positive scalar.

LineWidth — Line width

positive scalar

Line width, specified as a positive scalar.

SeriesIndex — Series index

positive integer | "none"

Since R2026a

Series index, specified as a positive integer or "none".

By default, the SeriesIndex property is a number that corresponds to the order in which the response was added to the chart, starting at 1. MATLAB^® uses the number to calculate indices for automatically assigning color, line style, or markers for responses. The indices refer to the rows of the arrays stored in the ColorOrder and LineStyleOrder, and MarkerStyleOrder properties of the parent chart. Any responses in the chart that have the same SeriesIndex number also have the same color, line style, and markers.

A SeriesIndex value of "none" indicates that a response does not participate in the indexing scheme.

Characteristics — Response characteristics

[]

Response characteristics, specified as []. Pole-zero plots have no characteristics to display.

Units

TimeUnit — Time units

"seconds" | "milliseconds" | "minutes" | ...

Time units, specified as one of these values:

• "nanoseconds"

• "microseconds"

• "milliseconds"

• "seconds"

• "minutes"

• "hours"

• "days"

• "weeks"

• "months"

• "years"

Dependencies

By default, the response uses the time units of the plotted linear system. You can override the default units by specifying toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

TimeUnitMode — Time unit selection mode

"auto" (default) | "manual"

Since R2026a

Time unit selection mode, specified as one of these values:

• "auto" — Automatically set the time unit to the units of the first system in Responses.Model.

• "manual" — Manually specify the time unit using the TimeUnit property.

Dependencies

If you modify the TimeUnit property, the value of the TimeUnitMode property changes to "manual".

FrequencyUnit — Frequency units

"Hz" | "rad/s" | "rpm" | ...

Frequency units, specified as one of these values:

• "Hz"

• "rad/s"

• "rpm"

• "kHz"

• "MHz"

• "GHz"

• "rad/nanosecond"

• "rad/microsecond"

• "rad/millisecond"

• "rad/minute"

• "rad/hour"

• "rad/day"

• "rad/week"

• "rad/month"

• "rad/year"

• "cycles/nanosecond"

• "cycles/microsecond"

• "cycles/millisecond"

• "cycles/hour"

• "cycles/day"

• "cycles/week"

• "cycles/month"

• "cycles/year"

Dependencies

By default, the response uses the frequency units of the plotted linear system. You can override the default units by specifying toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FrequencyUnitMode — Frequency unit selection mode

"auto" (default) | "manual"

Since R2026a

Frequency unit selection mode, specified as one of these values:

• "auto" — Automatically set the frequency unit to the units of the first system in Responses.Model.

• "manual" — Manually specify the frequency unit using the FrequencyUnit property.

Dependencies

If you modify the FrequencyUnit property, the value of the FrequencyUnitMode property changes to "manual".

Labels

Title — Title text and style

AxesLabel object

Title text and style, specified as an AxesLabel object with these properties.

String — Text value

string | character vector

Text value, specified as a string or character vector and stored as a string. To set the label text, you can set the String property directly or use the title function.

FontSize — Font size

positive scalar

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontWeight — Character thickness

"bold" | "normal"

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontAngle — Character slant

"normal" | "italic"

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontName — Font name

string | character vector

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Color — Text color

[0.1294 0.1294 0.1294] (default) | RGB triplet | hexadecimal color code | color name

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

Interpreter — Text interpreter

"tex" (default) | "latex" | "none"

Text interpreter, specified as one of these values:

• "tex" — Interpret characters using a subset of TeX markup.

• "latex" — Interpret characters using LaTeX markup.

• "none" — Display literal characters.

Subtitle — Subtitle text and style

AxesLabel object

Subtitle text and style, specified as an AxesLabel object with these properties.

String — Text value

string | character vector

Text value, specified as a string or character vector and stored as a string. To set the label text, you can set the String property directly or use the subtitle function.

FontSize — Font size

positive scalar

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontWeight — Character thickness

"bold" | "normal"

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontAngle — Character slant

"normal" | "italic"

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontName — Font name

string | character vector

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Color — Text color

[0.1294 0.1294 0.1294] (default) | RGB triplet | hexadecimal color code | color name

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

Interpreter — Text interpreter

"tex" (default) | "latex" | "none"

Text interpreter, specified as one of these values:

• "tex" — Interpret characters using a subset of TeX markup.

• "latex" — Interpret characters using LaTeX markup.

• "none" — Display literal characters.

XLabel — X-axis label text and style

AxesLabel object

X-axis label text and style, specified as an AxesLabel object with these properties.

String — Text value

string | character vector

Text value, specified as a string or character vector and stored as a string. To set the label text, you can set the String property directly or use the xlabel function.

FontSize — Font size

positive scalar

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontWeight — Character thickness

"bold" | "normal"

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontAngle — Character slant

"normal" | "italic"

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontName — Font name

string | character vector

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Color — Text color

[0.1294 0.1294 0.1294] (default) | RGB triplet | hexadecimal color code | color name

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

Interpreter — Text interpreter

"tex" (default) | "latex" | "none"

Text interpreter, specified as one of these values:

• "tex" — Interpret characters using a subset of TeX markup.

• "latex" — Interpret characters using LaTeX markup.

• "none" — Display literal characters.

YLabel — Y-axis label text and style

AxesLabel object

Y-axis label text and style, specified as an AxesLabel object with these properties.

String — Text value

string | character vector

Text value, specified as a string or character vector and stored as a string. To set the label text, you can set the String property directly or use the ylabel function.

FontSize — Font size

positive scalar

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

Dependencies

The default font size depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontWeight — Character thickness

"bold" | "normal"

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

Dependencies

The default font weight depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontAngle — Character slant

"normal" | "italic"

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

Dependencies

The default font angle depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

FontName — Font name

string | character vector

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Color — Text color

[0.1294 0.1294 0.1294] (default) | RGB triplet | hexadecimal color code | color name

Text color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

Interpreter — Text interpreter

"tex" (default) | "latex" | "none"

Text interpreter, specified as one of these values:

• "tex" — Interpret characters using a subset of TeX markup.

• "latex" — Interpret characters using LaTeX markup.

• "none" — Display literal characters.

Legend — Plot legend

Legend object

Since R2026a

Plot legend, specified as a Legend object with these properties.

Axes — Legend axes

two-element vector

Legend axes, specified as a two-element vector of integers indicating the row and column of the axes in which to display the legend.

Before R2026a: Specify the legend axes using the LegendAxes property.

Dependencies

When Legend.AxesMode is "auto", Legend.Axes contains the row and column of the northeast visible axis.

Location — Legend location within the axes

"northeast" (default) | "northwest" | "southeast" | "southwest" | "north" | "south" | "east" | "west" | "best" | ...

Legend location within the axes, specified as one of he location values listed in this table.

Location Value	Description
"north"	Inside top of axes
"south"	Inside bottom of axes
"east"	Inside right of axes
"west"	Inside left of axes
"northeast"	Inside top-right of axes
"northwest"	Inside top-left of axes
"southeast"	Inside bottom-right of axes
"southwest"	Inside bottom-left of axes
"northoutside"	Above the axes
"southoutside"	Below the axes
"eastoutside"	To the right of the axes
"westoutside"	To the left of the axes
"northeastoutside"	Outside top-right corner of the axes
"northwestoutside"	Outside top-left corner of the axes
"southeastoutside"	Outside bottom-right corner of the axes
"southwestoutside"	Outside bottom-left corner of the axes
"best"	Location where the least conflict occurs with the plot data at the time that you create the legend. If the plot data changes, you might need to reset the location to "best".
"bestoutside"	Outside top-right corner of the axes (when the legend has a vertical orientation) or below the axes (when the legend has a horizontal orientation)

Before R2026a: Specify the legend location using the LegendLocation property.

AxesMode — Legend axes selection mode

"auto" (default) | "manual"

Legend axes selection mode, specified as one of these values:

• "auto" — Show the legend in the northeast visible axes.

• "manual" — Show the legend in the axes indicated by the LegendAxes property.

Before R2026a: Specify the legend axes selection mode using the LegendAxesMode property.

Orientation — Orientation for stacking legend items

"vertical" (default) | "horizontal"

Orientation for stacking legend items, specified as one of these values:

• "vertical" — Stack items vertically.

• "horizontal" — Stack items horizontally.

Before R2026a: Specify the legend orientation using the LegendOrientation property.

Visible — Option to display the legend

"off" (default) | on/off logical value

Option to display the legend, specified as one of these logical on/off values:

• "on", 1, or true — Display the legend.

• "off", 0, or false — Hide the legend.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Before R2026a: Specify the legend visibility using the LegendVisible property.

Interpreter — Text interpreter

"tex" (default) | "latex" | "none"

Text interpreter, specified as one of these values:

• "tex" — Interpret characters using a subset of TeX markup.

• "latex" — Interpret characters using LaTeX markup.

• "none" — Display literal characters.

FontSize — Font size

positive scalar

Font size in point units, specified as positive scalar. One point equals 1/72 inch.

FontWeight — Character thickness

"bold" | "normal"

Character thickness, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

FontAngle — Character slant

"normal" | "italic"

Character slant, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

FontName — Font name

string | character vector

Font name, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

Axes Limits

XLimits — X-axis limits

two-element vector

X-axis limits, specified as a two-element vector of the form [min,max], where min is the minimum axis limit and max is the maximum axis limit.

Dependencies

When XLimitsMode is "auto", the X-axis limits are configured automatically based on the system dynamics.

XLimitsMode — X-axis limit selection mode

"auto" | "manual"

X-axis limit selection mode, specified as one of these strings.

• "auto" — Enable automatic limit selection, which is based on the total span of the plotted data.

• "manual" — Manually specify the axis limits by setting the XLimits property.

Dependencies

If you modify XLimits, the XLimitsMode value changes to "manual".

YLimits — Y-axis limits

two-element vector

Y-axis limits, specified as a two-element vector of the form [min,max], where min is the minimum axis limit and max is the maximum axis limit.

Dependencies

When YLimits is "auto", the Y-axis limits are configured automatically based on the system dynamics.

YLimitsMode — Y-axis limit selection mode

"auto" | "manual"

Y-axis limit selection mode, specified as one of these values:

• "auto" — Enable automatic limit selection, which is based on the total span of the plotted data.

• "manual" — Manually specify the axis limits by setting the YLimits property.

Dependencies

If you modify YLimits, the YLimitsMode value changes to "manual".

Axes Style

AxesStyle — Axes style

AxesStyle object

Axes style, specified as an AxesStyle object with these properties.

BackgroundColor — Axes background color

[1 1 1] (default) | RGB triplet | hexadecimal color code | color name

Axes background color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

Box — Option to display axes outline

"on" | on/off logical value

Option to display axes outline, specified as one of these logical on/off values.

• "on", 1, or true — Display outline.

• "off", 0, or false — Hide outline.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

BoxLineWidth — Line width of axes outline

0.5 (default) | positive scalar

Line width of axes outline and tick marks, specified as a positive scalar value in point units.

RulerColor — Ruler color

[0.1294 0.1294 0.1294] (default) | RGB triplet | hexadecimal color code | color name

Ruler color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet. The ruler color affects axes lines, tick marks, and tick labels.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

FontSize — Font size for tick labels

positive scalar

Font size for tick labels in point units, specified as positive scalar. One point equals 1/72 inch.

FontWeight — Character thickness for tick labels

"bold" (default) | "normal"

Character thickness for tick labels, specified as "bold" or "normal".

Not all fonts have a bold weight. Therefore, the bold font might look the same as the normal font.

FontAngle — Character slant for tick labels

"normal" (default) | "italic"

Character slant for tick labels, specified as "normal" or "italic".

Not all fonts have an italic font styles. Therefore, the italic font might look the same as the normal font.

FontName — Font name for tick labels

string | character vector

Font name for tick labels, specified as a string or character vector containing the name of a system-supported font name. The default font depends on the specific operating system and locale. To view a list of available system fonts, use listfonts.

GridVisible — Option to display grid

on/off logical value

Option to display grid, specified as one of these logical on/off values.

• "on", 1, or true — Display grid.

• "off", 0, or false — Hide grid.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Dependencies

The default grid visibility depends on the toolbox preferences. For more information, see Specify Toolbox Settings for Linear Analysis Plots.

GridType — Grid type

"s-plane" | "z-plane" | "cartesian"

Grid type, specified as one of these values:

• "s-plane" — Use an s-plane grid.

• "z-plane" — Use a z-plane grid.

• "cartesian" — Use a Cartesian grid. (since R2026a)

Dependencies

When the GridTypeMode property is "auto", the grid type is configured automatically based on the properties of the system.

GridTypeMode — Custom grid type

"auto" (default) | "manual"

Since R2026a

Grid type selection mode, specified as these values:

• "auto" — Enable automatic grid type selection according to these rules:

  • If all responses are for continuous-time systems, use an s-plane grid.

  • If all responses are for discrete-time systems, use a z-plane grid.

  • For a mix of continuous-time and discrete-time responses or when there are no responses, use a Cartesian grid.

• "manual" — Manually specify the grid type using the GridType property.

Dependencies

If you modify the GridType property, the value of the GridTypeMode changes to "manual".

GridColor — Grid color

[0.1294 0.1294 0.1294] (default) | RGB triplet | hexadecimal color code | color name

Grid color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

GridLineWidth — Grid line width

0.5 (default) | positive scalar

Grid line width, specified as a positive scalar in point units.

GridLineStyle — Grid line style

"-" | "--" | ":" | "-."

Grid line style, specified as one of these values.

Line Style	Description
"-"	Solid line
"--"	Dashed line
":"	Dotted line
"-."	Dash-dotted line

GridAlpha — Grid line transparency

0.15 (default) | scalar value in range [0,1]

Grid line transparency, specified as a scalar value in the range [0,1], where a smaller value indicates more transparency.

GridFrequencySpec — Natural frequencies for plotting grid lines

[] | vector of positive values

Natural frequencies for plotting s-plane and z-plane grid lines, specified as a vector of positive values.

If you do not specify natural frequencies:

• s-plane grid lines use values based on the axes limits.

• z-plane grid lines use values from 0 to π/T_s in steps of 0.1*π/T_s, where T_s is the sample time specified using GridSampleTime.

the chart

Dependencies

This property is supported for pole-zero plots with a nondefault grid type or with all responses in the same time domain.

GridDampingSpec — Damping ratios for plotting grid lines

[] | vector of values in the range (0,1)

Damping ratios for plotting s-plane and z-plane grid lines, specified as a vector of values greater than 0 and less than 1.

If you do not specify damping ratios:

• s-plane grid lines use values based on the axes limits.

• z-plane grid lines use values from 0 to 1 in increments of 0.1.

Dependencies

This property is supported for pole-zero plots with a nondefault grid type or with all responses in the same time domain.

GridSampleTime — Sample time of z-plane grid

-1 | positive scalar

Sample time (T_s) of z-plane grid, specified as -1 or a positive scalar. The natural-frequency grid lines depend on the value of T_s.

When GridSampleTime is a positive scalar, then the natural-frequency grid line labels display the actual frequency values.

When GridSampleTime is -1:

• If all responses have the same sample time, then the grid sample time matches that sample time and the natural-frequency grid line labels display the actual frequency values.

• If the sample times of the responses differ or are all -1, then the grid line labels display normalized factors of w_n/T_s.

Dependencies

This property is supported for pole-zero plots with a nondefault grid type or with all responses in the same time domain.

GridLabelsVisible — Option to display grid labels

on/off logical value

Option to display grid labels, specified as one of these logical on/off values.

• "on", 1, or true — Display grid labels.

• "off", 0, or false — Hide grid labels.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

MinorGridVisible — Option to display minor grid lines

on/off logical value

Option to display minor grid lines in plots of MIMO systems, specified as one of these logical on/off values.

• "on", 1, or true — Display minor grid lines.

• "off", 0, or false — Hide minor grid lines.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Dependencies

• This property is supported for pole-zero plots with a default grid type and a mix of continuous-time and discrete-time responses.

• Minor grid lines are not displayed by default.

MinorGridColor — Minor grid line color

[0.1294 0.1294 0.1294] (default) | RGB triplet | hexadecimal color code | color name

Minor grid color, specified as an RGB triplet or a hexadecimal color code and stored as an RGB triplet.

Alternatively, you can specify some common colors by name. This table lists these colors and their corresponding RGB triplets and hexadecimal color codes.

Color Name	RGB Triplet	Hexadecimal Color Code
"red" or "r"	[1 0 0]	#FF0000
"green" or "g"	[0 1 0]	#00FF00
"blue" or "b"	[0 0 1]	#0000FF
"cyan" or "c"	[0 1 1]	#00FFFF
"magenta" or "m"	[1 0 1]	#FF00FF
"yellow" or "y"	[1 1 0]	#FFFF00
"black" or "k"	[0 0 0]	#000000
"white" or "w"	[1 1 1]	#FFFFFF

Dependencies

This property is supported for pole-zero plots with a default grid type and a mix of continuous-time and discrete-time responses.

MinorGridLineWidth — Width of minor grid lines

0.5 (default) | positive scalar

Width of minor grid lines, specified as a positive scalar in point units.

Dependencies

This property is supported for pole-zero plots with a default grid type and a mix of continuous-time and discrete-time responses.

MinorGridLineStyle — Minor grid line style

"-" | "--" | ":" | "-."

Minor grid line style, specified as one of these values.

Line Style	Description
"-"	Solid line
"--"	Dashed line
":"	Dotted line
"-."	Dash-dotted line

Dependencies

This property is supported for pole-zero plots with a default grid type and a mix of continuous-time and discrete-time responses.

MinorGridAlpha — Minor grid line transparency

0.15 (default) | scalar value in range [0,1]

Minor grid line transparency, specified as a scalar value in the range [0,1], where a smaller value indicates more transparency.

Dependencies

This property is supported for pole-zero plots with a default grid type and a mix of continuous-time and discrete-time responses.

DataAxes — Active data axes

two-element vector

Since R2025a

Active data axes for hold workflows on MIMO linear analysis plots or a SISO Bode plots, specified as a two-element vector of integers indicating the row and column of the active axes. When you first create a chart, the bottom right axes is active. If you reduce the number of visible axes, the active axes automatically updates to a visible axes if necessary.

The DataAxes property affects only hold workflows that do not include adding new responses.

Multiple Responses

ColorOrder — Color order

three-column matrix of RGB triplets

Since R2026a

Color order for creating responses, specified as a three-column matrix, where each row is an RGB triplet.

MATLAB assigns colors to responses according to their order of creation. The first response uses the first color, the second response uses the second color, and so on. If there are more responses than colors, then the cycle repeats.

You can change the color order for a chart object in either of these ways:

• Set the ColorOrder property directly. In this case, you must specify the color array as a three-column matrix of RGB triplets. For example, the following command sets the color order to red, green, and blue.

  mychart.ColorOrder = [1 0 0;0 1 0;0 0 1];

• Call the colororder function, specifying the chart object as the target. In this case, you can specify the colors using one of these methods:

  • Array of color names

    colororder(mychart,["red","green","blue"])

  • Array of hexadecimal codes

    colororder(mychart,["#FF0000","#00FF00","#0000FF"])

  • Palette name

    colororder(mychart,"gem12")

  For more information on setting color order, see colororder.

ColorOrderMode — Color order definition mode

"auto" (default) | "manual"

Since R2026a

Color order definition mode, specified as one of these values:

• "auto" — Automatically set the color order based on the color order of the parent graphics object.

• "manual" — Manually specify the color order using the ColorOrder property.

Dependencies

If you modify the ColorOrder property, the value of the ColorOrderMode changes to "manual".

LineStyleOrder — Line style order

string | string array

Since R2026a

Line style order for creating responses, specified as one of the following values or an array of such values.

Line Style	Description
"-"	Solid line
"--"	Dashed line
":"	Dotted line
"-."	Dash-dotted line
"none"	No line

MATLAB assigns line styles to responses according to their order of creation. The first response uses the first line style, the second response uses the second line style, and so on. If there are more responses than line styles, then the cycle repeats.

LineStyleOrderMode — Line style order definition mode

"auto" (default) | "manual"

Since R2026a

Line style order definition mode, specified as one of these values:

• "auto" — Automatically set the line style order based on the line style order of the parent graphics object.

• "manual" — Manually specify the line style order using the LineStyleOrder property.

Dependencies

If you modify the LineStyleOrder property, the value of the LineStyleOrderMode changes to "manual".

MarkerStyleOrder — Marker style order

string | string array

Since R2026a

Marker style order for creating responses, specified as one of the following values or an array of such values.

Marker	Description
"none"	No marker
"o"	Circle
"+"	Plus sign
"*"	Asterisk
"."	Point
"x"	Cross
"_"	Horizontal line
"|"	Vertical line
"s"	Square
"d"	Diamond
"^"	Upward-pointing triangle
"v"	Downward-pointing triangle
">"	Right-pointing triangle
"<"	Left-pointing triangle
"p"	Pentagram
"h"	Hexagram

MATLAB assigns marker styles to responses according to their order of creation. The first response uses the first marker style, the second response uses the second marker style, and so on. If there are more responses than marker styles, then the cycle repeats.

MarkerStyleOrderMode — Marker style order definition mode

"auto" (default) | "manual"

Since R2026a

Marker style order definition mode, specified as one of these values:

• "auto" — Automatically set the marker style order based on the marker style order of the parent graphics object.

• "manual" — Manually specify the marker style order using the MarkerStyleOrder property.

Dependencies

If you modify the MarkerStyleOrder property, the value of the MarkerStyleOrderMode changes to "manual".

NextSeriesIndex — SeriesIndex value for next response

Read-only: positive integer

Since R2026a

This property is read-only.

SeriesIndex value for the next response added to the chart, returned as a positive integer. This property is useful when you want to track how the responses cycle through the color, line, and marker styles. This property maintains a count of the objects in the axes that have a numeric SeriesIndex property value. MATLAB uses NextSeriesIndex to assign a SeriesIndex value to each new response. The count starts at 1 when you create the chart, and it increases by 1 for each response added to the chart.

NextPlot — Properties to reset

"replace" (default) | "add"

Properties to reset when adding a new response to the chart, specified as one of these values:

• "replace" — Delete existing responses and reset chart properties, except Position and Units, to their default values before displaying the new response.

• "add" — Add new responses to the existing chart. Do not delete existing responses or reset axes properties before displaying the new response.

Position

OuterPosition — Chart size and location, including margins

[left bottom width height]

Chart size and location, including the margins for decorations such as axis labels and tick marks. Specify this property as a vector of form [left bottom width height]. The values are in the units specified by the Units property.

• left — Distance from the left edge of the parent container to the outer-left edge of the chart that includes the margins. Typically, the parent container is a figure, panel, or tab.

• bottom — Distance from the bottom edge of the parent container to the outer-bottom edge of the chart that includes the margins.

• width — Width of chart, including the margins.

• height — Height of chart, including the margins.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

InnerPosition — Chart size and location, excluding margins

[left bottom width height]

Chart size and location, excluding the margins for decorations such as axis labels and tick marks. Specify this property as a vector of form [left bottom width height]. The values are in the units specified by the Units property.

• left — Distance from the left edge of the parent container to the inner-left edge of the chart that excludes the margins. Typically, the parent container is a figure, panel, or tab.

• bottom — Distance from the bottom edge of the parent container to the inner-bottom edge of the chart that excludes the margins.

• width — Width of the chart, excluding the margins.

• height — Height of the chart, excluding the margins.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

Position — Chart size and location, excluding margins

[left bottom width height]

Chart size and location, excluding the margins for decorations such as axis labels and tick marks. Specify this property as a vector of form [left bottom width height]. This property is equivalent to the InnerPosition property.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

Units — Position units

'normalized' (default) | 'inches' | 'centimeters' | 'characters' | 'points' | 'pixels'

Position units, specified as a value from the following table. To change the position of the chart in specific units, set the Units property before specifying the Position property. If you specify the Units and Position properties in a single command (using name-value pairs), be sure to specify Units before Position.

Units	Description
'normalized'	Normalized with respect to the parent container, which is typically the figure, panel, or tab. The lower left corner of the container maps to (0,0), and the upper right corner maps to (1,1).
'inches'	Inches
'centimeters'	Centimeters
'characters'	Based on the default font of the graphics root object: Character width = width of letter x. Character height = distance between the baselines of two lines of text.
'points'	Typography points. One point equals 1/72 inch.
'pixels'	On Windows® and Macintosh systems, the size of a pixel is 1/96th of an inch. This size is independent of your system resolution. On Linux® systems, the size of a pixel is determined by your system resolution.

PositionConstraint — Position to hold constant

'outerposition' | 'innerposition'

Position property to hold constant when adding, removing, or changing decorations, specified as one of these values:

• 'outerposition' — The OuterPosition property remains constant when you add, remove, or change decorations such as a title or an axis label. If any positional adjustments are needed, MATLAB adjusts the InnerPosition property.

• 'innerposition' — The InnerPosition property remains constant when you add, remove, or change decorations such as a title or an axis label. If any positional adjustments are needed, MATLAB adjusts the OuterPosition property.

Note

Setting this property has no effect when the parent of the chart is a TiledChartLayout.

Layout — Layout options

empty LayoutOptions array (default) | TiledChartLayoutOptions | GridLayoutOptions

Layout options, specified as a TiledChartLayoutOptions object or GridLayoutOptions object. This property specifies options when an instance of your chart is a child of a tiled chart layout or gridded layout. If the instance is not a child of one of these layouts (for example, it is a child of a figure or panel), then this property is empty and has no effect. Otherwise, you can position the chart within the layout by configuring the layout options.

This code places chart object c into the third tile of a tiled chart layout and makes the chart span 2 rows and 3 columns.

c.Layout.Tile = 3;
c.Layout.TileSpan = [2 3];

This code places chart object c into row 2 of a gridded layout and makes the chart span columns 3 and 4.

c.Layout.Row = 2;
c.Layout.Column = [3 4];

Visibility

Visible — Chart visibility

"on" (default) | on/off logical value

Chart visibility, specified as one of these logical on/off values:

• "on", 1, or true — Display the chart.

• "off", 0, or false — Hide the chart without deleting it. You can still access the properties of chart when it is not visible.

The value is stored as an on/off logical value of type matlab.lang.OnOffSwitchState.

Parent

Parent — Parent container

Figure object (default) | TiledChartLayout object | UIFigure object | UIGridLayout object | UIPanel object | UITab object

Parent container of the chart, specified as one of these objects:

• Figure

• TiledChartLayout

• UIFigure

• UIGridLayout

• UIPanel

• UITab

HandleVisibility — Visibility of object handle

'on' (default) | 'off' | 'callback'

Visibility of the chart object handle in the list of children for its parent, specified as one of these values:

• 'on' — Chart object handle is always visible.

• 'off' — Chart object handle is invisible at all times. This option is useful for preventing unintended changes to the chart by another function. To temporarily hide the handle during the execution of that function, set the HandleVisibility to 'off'.

• 'callback' — Chart object handle is visible from within callbacks or functions invoked by callbacks, but not from within functions invoked from the command line. This option blocks access to the object in the Command Window, but it allows callback functions to access it.

Tips

You can also interactively modify response plot properties using the:

• Property Editor — For more information, see Customize Linear Analysis Plots Using Property Editor.

• Property Inspector

Version History

Introduced in R2024b

R2026a: Specify grid styling with new and updated properties

You can now specify grid styling using the following new or updated chart object properties.

Property	Description of Change
AxesStyle.GridType	Includes the new "cartesian" grid type. No longer includes the "default" grid type.
AxesStyle.GridTypeMode	New property that indicates whether the AxesStyle.GridType property is user-specified ("manual") or automatically specified by the software ("auto").

R2026a: Source data properties are now direct subproperties of Responses property

Source data properties under the Responses.SourceData property are now direct subproperties of the Responses property. The Responses.SourceData property has been removed.

Previous Property	New Property
Responses.SourceData.Model	Responses.Model
Responses.SourceData.FeedbackGainSpec	Responses.FeedbackGainSpec

R2026a: Configure legend using Legend property

Starting in R2026a, you can configure legends using the Legend property of the chart object. Also, you can now configure legend properties using name-value arguments with the legend function.

You can now configure the following legend properties:

• Axes

• Location

• AxesMode

• Orientation

• Visible

• Interpreter

• FontSize

• FontWeight

• FontAngle

• FontName

The following chart object properties are now subproperties of the Legend property and their names have changed. The previous property names still work, but using them is not recommended.

Previous Property	New Property
LegendAxes	Legend.Axes
LegendAxesMode	Legend.AxesMode
LegendVisible	Legend.Visible
LegendLocation	Legend.Location
LegendOrientation	Legend.Orientation

R2026a: Control automatic styling of responses

You can now control the automatic color, line style, and marker style of responses in the plot using the new chart object properties in this table.

New Chart Object Property	Description
ColorOrder	Color order for multiple response plots
LineStyleOrder	Line style order for multiple response plots
MarkerStyleOrder	Marker style order for multiple response plots
ColorOrderMode	Indicates whether the property value of ColorOrder, LineStyleOrder, or MarkerStyleOrder is user-specified ("manual") or automatically specified by the software ("auto").
LineStyleOrderMode
MarkerStyleOrderMode
NextSeriesIndex	Series index for the next response that you add to the chart. Once the software assigns this series index to a response, it increments NextSeriesIndex by one.

The Responses property of each chart object contains one response object for each response in a chart. This table shows the new style properties for response objects.

New Response Object Property	Description
ColorMode	Indicates whether the property value of Color, LineStyle, or MarkerStyle is user-specified ("manual") or automatically specified by the software ("auto").
LineStyleMode
MarkerStyleMode
SeriesIndex	Series index, which determines the color, line style, and marker style to select from the corresponding order property of the chart object. When you add a response to a chart, the software sets its series index to the value of the NextSeriesIndex property of the chart object.
SeriesIndexMode	Indicates whether the property value of SeriesIndex is user-specified ("manual") or automatically specified by the software ("auto").

R2025a: Specify active data axes

When using hold-on workflows, you can now programmatically specify the active data axes for a chart. To specify the active data axes, set the DataAxes property of the corresponding chart object.

R2025a: Specify background color and box line width for axes

You can now specify these style properties for chart objects:

• Background color — Use the AxesStyle.BackgroundColor property.

• Box outline width — Use the AxesStyle.BoxLineWidth property.

R2025a: Toggle visibility of grid labels

You can now control the visibility of the grid labels for root locus plots using theAxesStyle.GridLabelsVisible property. For example, display the grid for a plot and hide the grid labels.

rp = rlocusplot(sys);
rp.AxesStyle.GridVisible = "on";
rp.AxesStyle.GridLabelsVisible = "off";

R2025a: Configure grid line style

You can now customize grid line appearance for using new style properties. To specify a style property, set the corresponding AxesStyle subproperty of the chart object. This table lists the new style properties and their subproperties and supported plots.

Style Property	AxesStyle Subproperty	Supported Pole-Zero Plots
Major grid line style	GridLineStyle	All
Major grid transparency	GridAlpha	Plots with a default grid type and a mix of continuous-time and discrete-time responses
Minor grid visibility	MinorGridVisible
Minor grid color	MinorGridColor
Minor grid line width	MinorGridLineWidth
Minor grid line style	MinorGridLineStyle
Minor grid transparency	MinorGridAlpha
Custom grid type	GridType	All plots
Custom grid damping ratios	GridDampingSpec	Plots with a nondefault grid type or with all responses in the same time domain
Custom grid natural frequencies	GridFrequencySpec
Custom grid sample time	GridSampleTime