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**Feeds**

how can add an text on GUI

f = uifigure(); t = uitextarea(f); str = 'some text'; t.Value = str; https://www.mathworks.com/help/matlab/ref/matlab.ui.c...

24 hours ago | 0

indexing groups of elements in a vector in a certain way

%matrix A A = [1 1 4 1 5 1 6 1 5 2 6 2 7 2 3 3 4 3 5 3 3 3]; %matrix B B...

1 day ago | 0

| accepted

How can I add a marker to the legend with two x axes?

Interestingly, swapping the order of perr and terr in the legend() call makes both markers show up in the legend. pwa= [NaN;4.2...

1 day ago | 0

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How to remove the number caused by 'grid on' and How to change the legend mark

w0=300; l1=2*w0; l2=w0^2; k=60; s=tf('s'); r=[0.9,1.2,1.3,1.4,1.8,2.5,3.5]; H=figure; for i=1:numel(r) transfer_func...

1 day ago | 1

Two Plotting results one at a time like simulation

Let's say you have these x, y, and Slope variables: x = linspace(0,1,100); y = exp(x/2); Slope = 0.5*y; Then to plot y and S...

2 days ago | 0

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Running a large array

You can read and process the file in sections, one section at a time, in a loop, by specifying the start and count input argumen...

2 days ago | 0

I want to plot same X axis and different Y axis like timing diagram

I don't know what form your variables are in, but here's something: t = 0:0.5:4.5; Vc = [0 1 0 1 0 1 0 1 0]; Vb = [0 0 1 1 0 ...

2 days ago | 1

Right now, changing the spinner's value will create a new maze, but the mazes are still 10-by-10. Try running the app to verify this behavior. To fix this, you can use the gr

% Callback function: GridSizeSpinner, NewMazeButton function NewMazeButtonPushed(app, event) % get the spinner's value: ...

2 days ago | 0

Adding a column to a UITable and then using it.

app.StimInputTable.Data.Var4 = app.StimInputTable.Data.Var3./app.StimInputTable.Data.Var2; % ^^^^^ you we...

3 days ago | 0

| accepted

I want to write data at the end of every nth line of a text file

str = readlines(filename); str(4:4:end) = str(4:4:end) + "c"; writelines(str,filename) where "filename" is the abso...

3 days ago | 1

| accepted

Questions about the input X of pcolor and contourf.

I interpret the pcolor documentation as saying that a rectangular grid and a parametric grid are separate special cases, so the ...

5 days ago | 0

With a ribbon plot, how to make the ribbons go along each matrix row instead of each column?

If you have some leeway on the x- and y-axis tick locations, you can use ribbon with the tranpose of Z and just alter the axis l...

6 days ago | 2

Save graphical objects in .mat file for later use

You can use copyobj to copy an existing graphical object (e.g., scatter plot) to another parent (e.g., axes). Here's an example...

6 days ago | 0

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With a ribbon plot, how to make the ribbons go along each matrix row instead of each column?

Z=[0,1,2,2; 1,2,3,3; 2,3,4,4; 3,4,5,5]; [m,n] = size(Z); Y = (0:m-1).'; X = (0:n-1).'; Original ribbon plot, for reference...

6 days ago | 1

How can I make a graph like this for ANOVA 2-Way

The code that constructs bpdata takes the table data for each patient in turn and puts it together into a 2-row matrix with a co...

6 days ago | 0

| accepted

How to programmatically change the command window text size?

s = settings; s.matlab.fonts.codefont.Size.PersonalValue = 16;

6 days ago | 0

agrupacion de datos de una tabla

% first, I construct a table similar to yours N = 152709; MeasID = cellstr(char(64+randi(26,N,4))); Time = datetime(randi(30,...

7 days ago | 0

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How to count the number of non-nan values for combination of multiple variables

% Initial table a = [1;1;1;2;2;2;2]; b = [660; 661; 661; 663; 663; NaN; 663]; c = [1;2;2;5;5;NaN;6]; d = [11;12;NaN; 13; 14;...

7 days ago | 0

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What does the syntax matrix(vector) mean?

Indexing. https://www.mathworks.com/company/technical-articles/matrix-indexing-in-matlab.html

7 days ago | 0

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Unrecognized function or variable 'RK'.

https://www.mathworks.com/matlabcentral/answers/96005-why-do-i-get-the-error-unrecognized-function-or-variable

7 days ago | 0

How do I draw contours on multiple surfaces so that they line up

Maybe specifying a vector of contour levels, rather than the number of levels, is appropriate. For example: lev = 0.01:0.01:0.0...

7 days ago | 0

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Error using feval Function to evaluate must be represented as a string scalar, character vector, or function_handle object.

Use the 's' (or "s") option in input() in order to store the result as text without evaluating it: fname = input('\n M-file con...

7 days ago | 0

A problem with a code that works as it is but gives an index error when is used inside a function

Based on the error message, "Index in position 2 exceeds array bounds. Index must not exceed 100. Error in cleaner (line 118) z...

7 days ago | 0

How can I write a 'for' loop that sums up all elements of a vector?

a = 1:5; total = 0; for ii = 1:numel(a) total = total+a(ii) end

7 days ago | 0

Iterate over struct with length>1, with multiple fields

teststruct = struct('name', {'Alice', 'Bob', 'Eve'}, 'age', {24, 45, 35}) names = {teststruct.name} ages = [teststruct.age] O...

8 days ago | 0

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How to plot RGB histogram of an image into a single 3D slice plot?

image = imread('peppers.png'); R = image(:,:,1); G = image(:,:,2); B = image(:,:,3); subplot(2,2,1); imshow(image); titl...

8 days ago | 2

| accepted

i have a vector in lenght 5, i need to check if a sum of 2 or more elements in the vector is equal to another element at the same vector how to do that?

v = [10 5 13 15 28]; m = dec2bin(0:2^numel(v)-1)-'0'; m = m(sum(m,2) >= 2,:); [ism,idx] = ismember(m*v.',v); idx = idx(ism...

8 days ago | 3

Matrices à coefficients dépendant d'un paramètre

One option: F = @(t)[0,1;t,t^2]; M = F(1) M = F(-1) M = F(2) Another option: syms t M = [0,1;t,t^2]

8 days ago | 0

| accepted

Fill in the missing time stamps in measurment data when the system is runnign but not when the system was OFF

Data1 = readtimetable('Data1.xlsx'); Data2 = readtimetable('Data2.xlsx'); Data3 = readtimetable('Data3.xlsx'); Maybe one of t...

8 days ago | 0

| accepted

Arrays have incompatible sizes for this operation error while checking dropdown.value not equal to a char value

Don't use == or ~= to compare character arrays, use strcmp, i.e.: if ~strcmp(app.SelectBatteryDropDown.Value,'none') because =...

8 days ago | 0

| accepted