Answered
How to use logical indexing for slices of a 3D matrix
nxm logical index applied to all pages of a 3D array domain = rand(4,4,4); condition1 = domain(:,:,1).*ones(size(domain)) > 0....
How to use logical indexing for slices of a 3D matrix
nxm logical index applied to all pages of a 3D array domain = rand(4,4,4); condition1 = domain(:,:,1).*ones(size(domain)) > 0....
5 years ago | 1
| accepted
Answered
How to get values from multiple columns based on the values of one column ?
This is how I imagine your data are organized based on your description. % [year, month, data, ...] data = [repelem((2007:2...
How to get values from multiple columns based on the values of one column ?
This is how I imagine your data are organized based on your description. % [year, month, data, ...] data = [repelem((2007:2...
5 years ago | 0
Answered
how can I read the number in figure(matlab) without rounding?
This is a precision issue with datatips. See this answer to learn how to specify the level of precision in datatips. Demo of ...
how can I read the number in figure(matlab) without rounding?
This is a precision issue with datatips. See this answer to learn how to specify the level of precision in datatips. Demo of ...
5 years ago | 1
| accepted
Answered
highlight different data on the same graph
It looks like you're using datetime values and if you're not, you should be. Datetime values are not represented by strings. A ...
highlight different data on the same graph
It looks like you're using datetime values and if you're not, you should be. Datetime values are not represented by strings. A ...
5 years ago | 1
Answered
cell2mat -> operation -> mat2cell : How...?
for i=1:301 % generate the cell array example dataset u{1,i}=rand(41,50); end u_3d = cat(3,u{:}); u_3dFilt = medfilt3...
cell2mat -> operation -> mat2cell : How...?
for i=1:301 % generate the cell array example dataset u{1,i}=rand(41,50); end u_3d = cat(3,u{:}); u_3dFilt = medfilt3...
5 years ago | 0
| accepted
Answered
unable to make invisible for edit box in gui.
> when users choose radiobutton1, this edit box should be invisible Then you need to move your line of code from the edit1_Call...
unable to make invisible for edit box in gui.
> when users choose radiobutton1, this edit box should be invisible Then you need to move your line of code from the edit1_Call...
5 years ago | 0
| accepted
Answered
How can I get the sums of all possible combinations of the values of a vector?
% Input: v, a row or column vector v = [2 4 6 8]; % create permutations and summation results n = numel(v); vIdx = 1:...
How can I get the sums of all possible combinations of the values of a vector?
% Input: v, a row or column vector v = [2 4 6 8]; % create permutations and summation results n = numel(v); vIdx = 1:...
5 years ago | 0
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Answered
Create output of rectangles with 200 different colours
rectangle('Position',pos) pos is a 1x4 vector defining [LeftSide, BottomSide, Width, Height]. See the FaceColor and EdgeColor...
Create output of rectangles with 200 different colours
rectangle('Position',pos) pos is a 1x4 vector defining [LeftSide, BottomSide, Width, Height]. See the FaceColor and EdgeColor...
5 years ago | 0
Answered
xcorr can't be used
xcorr does not require Signal Processing Toobox in Matlab R2019a and later. For Matlab releases prior to 19a,, you'll need th...
xcorr can't be used
xcorr does not require Signal Processing Toobox in Matlab R2019a and later. For Matlab releases prior to 19a,, you'll need th...
5 years ago | 0
Answered
How to control the pushbutton in a while loop in Matlab GUI
> I would like to run the loop each time only when I click the pushbutton. I don't know whether you're using app designer, GUI...
How to control the pushbutton in a while loop in Matlab GUI
> I would like to run the loop each time only when I click the pushbutton. I don't know whether you're using app designer, GUI...
5 years ago | 1
| accepted
Answered
What is the fastest way to find zeros and ones indices in a 3D binary array?
Here are two versions of your code that are faster than the original but they only shave off a sliver of time. I've timed 10 re...
What is the fastest way to find zeros and ones indices in a 3D binary array?
Here are two versions of your code that are faster than the original but they only shave off a sliver of time. I've timed 10 re...
5 years ago | 0
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Answered
Count frequencies of occurence using both text and number
Use groupsummary % Produce table % I use categorical variables but you can you strings or char-vectors rng('default') % for r...
Count frequencies of occurence using both text and number
Use groupsummary % Produce table % I use categorical variables but you can you strings or char-vectors rng('default') % for r...
5 years ago | 0
| accepted
Answered
Dot indexing is not supported for variables of this type.
> I am trying to recursively search directories and build a list of paths to image files Inputs: % Define the main directory...
Dot indexing is not supported for variables of this type.
> I am trying to recursively search directories and build a list of paths to image files Inputs: % Define the main directory...
5 years ago | 1
| accepted
Answered
How can you sum up all vectors from a quiver plot?
This solution computes the vector sum of all quiver vectors in the test image and then computes the 95% confidence interval (CI...
How can you sum up all vectors from a quiver plot?
This solution computes the vector sum of all quiver vectors in the test image and then computes the 95% confidence interval (CI...
5 years ago | 0
Submitted
Example: Dashcam optic flow using Computer Vision Toolbox
A brief description of the steps needed to produce an optic flow field from dashcam footage using Matlab's Computer Vision Toolb...
5 years ago | 2 downloads |
Answered
Want to remove one plot from the two plots in my app designer pannel when i choose Synthesis
A simple and efficient solution would be to assign the lower plot to a uipanel in app designer and to set the visibility of the ...
Want to remove one plot from the two plots in my app designer pannel when i choose Synthesis
A simple and efficient solution would be to assign the lower plot to a uipanel in app designer and to set the visibility of the ...
5 years ago | 1
Answered
Results from a loop in one table
As you noted, the second line of code in your for-loop should be moved outside and prior to the for-loop. However, there are tw...
Results from a loop in one table
As you noted, the second line of code in your for-loop should be moved outside and prior to the for-loop. However, there are tw...
5 years ago | 0
| accepted
Answered
Plot Matrix as Heatmap with different cell size width
Not possible with heatmap. Here's a solution using surf. % Inputs data = [ 1 2 3; 4 5 6]; rowWidths = [10, 20]; %mm, one f...
Plot Matrix as Heatmap with different cell size width
Not possible with heatmap. Here's a solution using surf. % Inputs data = [ 1 2 3; 4 5 6]; rowWidths = [10, 20]; %mm, one f...
5 years ago | 1
| accepted
Answered
putting space between string and double using fprintf
> In the first code, 10 spaces were added before 'G1' That's incorrect. 8 spaces are added prior to 'G1'. From the documentat...
putting space between string and double using fprintf
> In the first code, 10 spaces were added before 'G1' That's incorrect. 8 spaces are added prior to 'G1'. From the documentat...
5 years ago | 1
| accepted
Answered
Plotting three axis with one y axis
See this comment that lists links to many examples to follow. But before proceeding, are you convinced that this is the best ...
Plotting three axis with one y axis
See this comment that lists links to many examples to follow. But before proceeding, are you convinced that this is the best ...
5 years ago | 1
| accepted
Answered
How to extend array from end of that array to known value?
Assuming A is a row vector and you'd like to add 218 values that extend from the end of A to 0.512, Aextension = linspace(A(end...
How to extend array from end of that array to known value?
Assuming A is a row vector and you'd like to add 218 values that extend from the end of A to 0.512, Aextension = linspace(A(end...
5 years ago | 0
| accepted
Answered
for each loop take the increasing position of a vector matlab?
The length of L would need to equal the length of x or it could be longer than x, but not shorter. for i=1:lenght(x) if x...
for each loop take the increasing position of a vector matlab?
The length of L would need to equal the length of x or it could be longer than x, but not shorter. for i=1:lenght(x) if x...
5 years ago | 0
| accepted
Answered
Stacking Multiple 2D plots in one 3D plot
Check out the following resources. If you get stuck implementing a solution, share your updated code and we can help you get un...
Stacking Multiple 2D plots in one 3D plot
Check out the following resources. If you get stuck implementing a solution, share your updated code and we can help you get un...
5 years ago | 1
| accepted
Answered
Is there a better way to animate a figure with AppDesigner?
It looks nice but it's very inefficient. On each iteration you're throwing out everything and rebuilding it from scratch. See ...
Is there a better way to animate a figure with AppDesigner?
It looks nice but it's very inefficient. On each iteration you're throwing out everything and rebuilding it from scratch. See ...
5 years ago | 1
| accepted
Answered
Add a user define property to freehand object
You could apply your own rotation using a rotation matrix. % anonymous function to center the obj at (0,0), % rotate it, an...
Add a user define property to freehand object
You could apply your own rotation using a rotation matrix. % anonymous function to center the obj at (0,0), % rotate it, an...
5 years ago | 0
Answered
d = daq("directsound") yields "Unrecognized function or variable 'daq'"
daq() was released in R2020a which is vs. 4.1 of the Data Acquisition Toolbox.
d = daq("directsound") yields "Unrecognized function or variable 'daq'"
daq() was released in R2020a which is vs. 4.1 of the Data Acquisition Toolbox.
5 years ago | 0
| accepted
Answered
plot a hexagonal figure
th = linspace(0,2*pi,7) + pi/6; x = sin(th); y = cos(th); figure() tiledlayout(1,2) nexttile() plot(x,y,'k-o','markerS...
plot a hexagonal figure
th = linspace(0,2*pi,7) + pi/6; x = sin(th); y = cos(th); figure() tiledlayout(1,2) nexttile() plot(x,y,'k-o','markerS...
5 years ago | 1
| accepted
Answered
copy Freehand object from a figure and pate into another figure
You could use copyobj(z,ax) where z is an existing freehand object or a freehand object saved to a mat file and ax is the handle...
copy Freehand object from a figure and pate into another figure
You could use copyobj(z,ax) where z is an existing freehand object or a freehand object saved to a mat file and ax is the handle...
5 years ago | 0
Answered
Display three 2D images into 3D space
pcolor does not support 3D coordinates so you'll have to use surf with flattened values along one of the dimensions for each pla...
Display three 2D images into 3D space
pcolor does not support 3D coordinates so you'll have to use surf with flattened values along one of the dimensions for each pla...
5 years ago | 0
| accepted
Answered
How to get brushed data point index from Plot?
Continuing from your code... brushedPoints = [brushed_x(:), brushed_y(:), brushed_z(:)]; dist = pdist2([xd(:),yd(:),zd(:)], br...
How to get brushed data point index from Plot?
Continuing from your code... brushedPoints = [brushed_x(:), brushed_y(:), brushed_z(:)]; dist = pdist2([xd(:),yd(:),zd(:)], br...
5 years ago | 1
| accepted