multiply table and matrix
Why all the complications with cell arrays and tables? Just use numeric arrays: A = [0.2 0.5 0.3; 0.1 0.1 0.3]; B = [2;3]; C...

4 Monate ago | 1

Randomly change certain characters of a character matrix
If you mean basic letters, then e.g. idx = randi( numel( yourCharArray ), 1000, 1 ); replacementChars = char( randi( 26, 1000,...

4 Monate ago | 0

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How can I use Function handle with arrays?
Not really sure how the code you posted, with syms and matlabFunction is connected to what you are asking, but this function sho...

4 Monate ago | 0

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Select all eelements equal to a number
b = x( 1:find( x == 4, 1, 'last' );

4 Monate ago | 0

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Turning separate columns of data into a single column or vector.
times = []; for ... ... times = [ times; A.data(:,1) ]; ... end You will get warnings about variable growing in...

4 Monate ago | 0

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Apply an element-wise calculation of an equation to a matrix
log( X ./ Y ) ./ Z 100 ./ log( X ./ Y ) - 50

4 Monate ago | 0

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Find function for cell array
wantedArray = [1,122,185]; cellfun( @(x) isequal(x,wantedArray), myCell ); You would be better off using a numeric array thoug...

5 Monate ago | 1

What are the thought processes that go on when you are trying to solve a MATLAB problem?
I make very heavy use of the debugger, in combination with the command line to try out syntax and options. I also often like to...

5 Monate ago | 1

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Accesing structure using a function
total = campus.( building ).( year ).( var ); should work fine, assuming campus is your struct and that is a branch of the stru...

5 Monate ago | 0

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how to get the RGB number from colorbar
colourmap = colormap( hAxes ); where hAxes is the axes handle. gca if you really must! You can then interpolate it to make it...

5 Monate ago | 0

How can I change variables within a GUI to make plot using the data from user input?
Simplest option is simply to create variables g = []; valzero = []; (or initialise them to a default value) at the top of y...

5 Monate ago | 0

Accept a specific type of file Matlab
doc uigetfile gives examples of specifying filters for file type. You can use a generic uigetfile and a check like that after ...

5 Monate ago | 0

Find the index of given value in an array
val = 2.5; idxAboveVal = find( array >= val, 1 ); idxFract = idxAboveVal - ( array( idxAboveVal ) - val ) / ( array( idxAboveV...

5 Monate ago | 1

Call to Subplot is Adding Axis to Current Figure
Yes, that does seem a slightly odd thing to have in the startup file and is indeed the cause of this behaviour (I just tested wi...

5 Monate ago | 0

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plz i need help to make this , thank u
[~, idx] = min( MA ); resA = A(:,idx);

5 Monate ago | 0

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Random order, but equally appearance
doc randperm

5 Monate ago | 1

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How to recognize if there is in a character a point '.'?
What is wrong with simply xx == '.' if xx is a char array rather than a string as it seems to be?

5 Monate ago | 0

What does 'Colormap' do to the image with double/float pixels？
Data is linearly binned into however many bins/elements your colourmap has and that colour applied. e.g. if your data is 0-1 an...

5 Monate ago | 0

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Writing a Matrix 6x6 in one line
A = 1:36; I may be misunderstanding the question, but if not then it would seem to be that simple? or A = A(:)'; if you are ...

6 Monate ago | 0

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Feature Request: Refactoring tool
This is still such a huge frustration all the way into R2019a. Even things that should be so simple can take on epic proportion...

6 Monate ago | 2

Undefined operator '+' for input arguments of type 'function_handle'.
A2 = V2a + U2(t) ; would be a function call. You only use the @(t) when defining a function handle, not when actually calling...

6 Monate ago | 0

MATLAB Answers Wish-list #4 (and bug reports)
One or two things with respect to notification preferences and Activity Feed that I would like: Having a preference to not auto...

6 Monate ago | 3

Ylim is not working
Use explicit axes handles for plotting instructions and instructions like hold, ylim, xlim. i.e. hAxes(1) = subplot(3,1,1); sc...

6 Monate ago | 1

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How to set the x-aixs when plotting with certain row and column of matrix
I'm surprised you can see anything useful on that using plot rather than an image, but the plot function takes multiple argument...

6 Monate ago | 0

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Undefined variable or class error
The variable in your mat file is called NEWSST, not NEWSST_2015. It is usually better though to load a mat file into a struct a...

6 Monate ago | 0

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How to hide a figure instead of deleting it?
If you over-ride the CloseRequestFcn you can have it do whatever you tell it. In general you should always have this function c...

6 Monate ago | 1

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Given an instance of a class (without knowing class name), how to call the constructor?
Since your class doesn't inherit from handle the assignment operator will give you a copy of the correct class. However, this w...

6 Monate ago | 0

Create a specular colormap
figure; imagesc( rand(100) - 0.5 ); % Random data centred on 0 baseCmap = hot( 256 ); cmap = [ flip( baseCmap(2:end,:) ); base...

6 Monate ago | 1

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calculate the mean square error
Calculate the error, square it and calculate the mean! mean( ( a - b ).^2 );

6 Monate ago | 0