# Robert U

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**Content Feed**

Using symbolic variables, how do you expand polynomials to show complex roots in an equation

Hi bob, I guess it's a transfer function and you are looking for poles and zeros. syms s Num = 10^4*(s+5)*(s+70); Den = s*(s...

en dag ago | 0

| accepted

multiple graphs in one script

Hi basim almutairi, Simplify your life and use handles (start here: graphics-objects): figure handles, axes handles, ... Handl...

11 dagar ago | 0

I don't know how to avoid eval

Hi Wan Ji, you can use cell-arrays. You don't need to assign variables with different names to multiple outputs. function p = ...

14 dagar ago | 2

How to set common colorbar for multiplots?

Hi UTKARSH VERMA, have a look at caxis(): [x, y] = meshgrid(0:0.1:1,0:0.1:1); z = rand(11,11,24); minColorLimit = min(min(...

16 dagar ago | 1

| accepted

How to converting cell to matrix for image based classification?

Hi Nikhat Ali, Please have a look into documentation fitcecoc(). The way you call the function is not working since data format...

16 dagar ago | 0

| accepted

Matrix of transfer functions

Hi Davood Raoofsheibani, you can define arrays of transfer functions similar to numeric arrays by using tf(): % define array ...

2 månader ago | 0

Convert a Complex Number to exponential real

Hi Jogger, have a look at Euler's formula (https://en.wikipedia.org/wiki/Euler's_formula). x = 2 + 1j * 5; r = sqrt(real(x)^2...

3 månader ago | 1

| accepted

Different rotations of XLabels

Hi Julie, One way to rotate single XTickLabel Strings is to replace them by text(). Advantage over annotation() is that the tex...

4 månader ago | 0

| accepted

How to shift entries in a vector by the value of the number in that entry?

Hi Tim David, you can apply circshift() to the data. T = [0, 0, 4, 0, 7, 0, 0, 5, 0, 9]; shiftme = @(A,nShift) circshift(A,...

6 månader ago | 0

use vector as input

Hi Vincent Degonda, Your for-loop call is not providing what you expected. Your input variable is a vector already. dpb tried t...

7 månader ago | 0

Pass a structure to a function

Hi George Bashkatov, First of all: Do not use global variables if not absolutely necessary. There are hundreds of threads argui...

7 månader ago | 0

Does Matlab solver allow integration?

Hi Craig Dekker, please, have a look at the documentation symbolic int(): syms t L R Vo WR = R*((Vo/R)*exp(-t/(L/R)))^2 iWR ...

7 månader ago | 0

| accepted

How to keep decimal float point only

If it is just for display you can specify the output format in fprintf. a = 323.153; fprintf('<< a = %.0f.\n',a) output: << ...

8 månader ago | 0

| accepted

How to join a double variable and a strucure variable to plot a heat map ?

Dear Niraj Bal Tamang, According to documentation heatmap() supports tables among others. Working with tables is very convenien...

8 månader ago | 0

| accepted

plot repeating x values

Hi Christopher Tran Rojas, you have to replace the xTickLabel-Strings. Otherwise an increasing value vector is expected. Plus, ...

11 månader ago | 0

Frequency domain and Shannon limit

Hi long le, Matlab documentation is quite nice since it provides several examples on key topics. One possibility to transform t...

11 månader ago | 1

Catching a warning to avoid matrix singularity

Hi Mostafa Nakhaei, quite similar to what you describe is shown in the documentation: https://de.mathworks.com/help/matlab/ref/...

11 månader ago | 1

| accepted

How can I get an upright mu in math with latex interpreter?

Hi Philipp Rehlaender, It seems, there is no straight-forward way to do that in matlab figures. Nonetheless, there are work-aro...

ungefär ett år ago | 0

Magnitude and Phase response of a Lowpass filter

Hi Suvvi Kuppur Narayana Swamy: The function angle() is calculating the phase angle of a complex number. Since all values are r...

ungefär ett år ago | 0

Interpolating at vertices of a mesh

Hi Sanwar Ahmad, for interpolation between meshes you can have a look at the built-in function scatteredinterpolant(). More in...

ungefär ett år ago | 0

| accepted

How to estimate the parameter in a customized transfer function

Hi Lihao Zheng, first of all you can convert the two forms from one to another. Second it is possible to define transfer functi...

ungefär ett år ago | 0

filesep for window '\', which may cause sprintf doesn't work for some '\%d' string, how can i avoid ?

Hi Huang Chi-En, please refer to sprintf-documentation; special characters might need different syntax. Since backslash is an e...

ungefär ett år ago | 0

How do I add a class to a class

Hi Alok Virkar, another approch making use of object arrays which might be more convenient in use: rocket.m classdef rocket <...

ungefär ett år ago | 0

How do I add a class to a class

Hi Alok Virkar, There are several possibilities to fullfill the described functionality. But first there are issues with your c...

ungefär ett år ago | 0

Program not calculating correct value in output file

Hi Joseph Edelman, it seems as if line 52 produces complex numbers for HF. In consequence the values of DELQ are complex as wel...

ungefär ett år ago | 1

Low pass filter design

Hi Toygar Ozel, have a look at the step response of your filter, e.g. using filter designer. You can determine easily that the ...

mer än ett år ago | 0

| accepted

Merge numeric values of 2 columns into 1

Hi Andrea Boa, probably your import function is not correct regarding either format or delimiter, or both. The following functi...

mer än ett år ago | 0

How to standardize the colormap of every figure created from different set of data

Hi NUR AMIRA ZULKIFLLI, you can supply own colormaps to several plots. You might want to look into imagesc() since it provides ...

mer än ett år ago | 0

How to graph multiple points onto one graph?

Hi Brian Len, you might have some troubles with syntax. Have a look at the very good documentation: https://de.mathworks.com/he...

mer än ett år ago | 0

| accepted

how can i change the Color of the Row (uitable) when if==0? Die farbe der reihe im IUtable soll sich öndern wenn if ==0

Hi Torsion27, using uifigure and uitable there is an easy-to-apply solution on your data. WIthout going through your code I rec...

mer än ett år ago | 0