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( need help ) nested for loops to print the following pattern
You have it almost right but I'd suggest to use for-loops for indexing through rows(lines) and columns(individual character). Al...

más de 8 años hace | 0

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how to split cell array values into two columns?
one way: C = {[2.13949546690144;56.9515770543056]}; A = round([C{:}].'*100)/100 A = 2.1400 56.9500

más de 8 años hace | 0

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Hello guys, I have a question concerning my Matlab script. I try to read/load several pictures but I always get the same error. Could anyone have a quick look at my script? The files I try to load defintely exist and they all have the .jpg format.
Probably you're not working on the same directory. Try using fullfile, bild = imread(fullfile(affectivepictures(i_pics).path...

más de 8 años hace | 0

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How to call/run a .m file by selecting a menu bar item from main .m file
use its *callback* <https://de.mathworks.com/help/matlab/ref/matlab.ui.container.menu-properties.html> m = uimenu; m.Te...

más de 8 años hace | 0

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Undefined function or variable
You still haven't answered _how_ you set the path. Use addpath, addpath('C:\Users\MyName\Documents\MATLAB') read more her...

más de 8 años hace | 0

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How to indexing directly multiple row?
use linear indices, read this: <https://www.mathworks.com/help/matlab/ref/sub2ind.html> With your example, colInd = r...

más de 8 años hace | 0

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How to display the output using GUI? (not guide)
Have a textbox in your GUI and set this textbox's value in your pushbutton callback function pushbutton_callback(...) ...

más de 8 años hace | 0

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Global variables (not sure if it's the case or not)
One idea is to use structs. Put all your variables under this struct and you'd need to pass only this struct. For example, ...

más de 8 años hace | 0

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Dimensions of matrices being concatenated are not consistent.
The error comes from your very first line when you're trying to create a char array called letter. Look at this example, >>...

más de 8 años hace | 3

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Adding legend to plots created by for loops
There are various ways. You can simply add the legend after you plot everything like, legend({'essential','less essential','...

más de 8 años hace | 0

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Load variables with same name with uigetfile and give them a new name automatically
Don't do that! why? read this: <https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-...

más de 8 años hace | 0

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How can i add 0 or 1 to an vector?
use |diff|, <https://www.mathworks.com/help/matlab/ref/diff.html> new_vector = [0 diff(Pos)>0] the answer is ...

más de 8 años hace | 1

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Getting error Data variables must be numeric or logical when doing grpstats
use |varfun|, <https://www.mathworks.com/help/matlab/ref/varfun.html> t2_mean = varfun(@mean,t2(:,[1 2 3 6]),'GroupingVar...

más de 8 años hace | 0

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Percentage in tablerows with subgrouping
Your last column is the sum of correct answer for every case and you can calculate the percentage of correct answer with that us...

más de 8 años hace | 0

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how can i find max value in the 2d plot graph with x axis location ?
Looks like you simply want to extract the index of the max value from powerDensity vector, [maxPD,indx] = max(powerDensity);...

más de 8 años hace | 0

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How do I tell Matlab to Label the point where my subplots are equal?
Why are you using a cell array? It looks like you're better off with a numeric array and then you also wouldn't need a loop in t...

más de 8 años hace | 0

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Can anyone help me understand what it is asking? Plotting wise.
Without knowing the details about the variables |y1,y2| and |N|, all I can say is you are asked to create a function like, f...

más de 8 años hace | 0

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How to find a row that have maximum mean value in 2D array?
You'd need [maxVal, maxInd] = max(mean(S,2)) mean with parameter 2 calculates mean on the second dimension and then you ...

más de 8 años hace | 0

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Subscript indices must either be real positive integers or logicals.
when you write, y(n+1)=x(n)+0.005.*(((y).^2)+(7*y)+2)/(3*x((y).^2)+((1-x)*(3*((y)^2)+7))); ...

más de 8 años hace | 0

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Conditional in values of a matrix
indx = A(:,2)<0; B = indx.*A(:,2) + ~indx.*(A(:,2)-A(:,3).*abs(A(:,2)))

más de 8 años hace | 2

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Find positive elements in a 3D matrix
*EDITED* If you want to copy the elements only if all the elements in a row in that *page* is positive. In that case, you can...

más de 8 años hace | 0

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Combine Strrep in one Line.
use replace with cell arrays, <https://www.mathworks.com/help/matlab/ref/replace.html> a = 'abcxyz' old = {'x';'z'}; ...

más de 8 años hace | 0

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How can I call all element from cell class ?
cat(1,A{:})

más de 8 años hace | 0

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Array of x and y values. Find value of y when x=0, how?
You might want to use interp1, read: <https://de.mathworks.com/help/matlab/ref/interp1.html> Hint: For your case, 0 lies o...

más de 8 años hace | 0

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Insert an element once in a listbox
Check if your string already existing in your listbox and make output false in that case? Something like, if (Output...

más de 8 años hace | 0

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How can I preallocate me code?
Use indexing. Pre-allocating won't make a big difference if you have a for loop there. roll = randi([1 6], 1, 10000); in...

más de 8 años hace | 0

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Reading strings from text file to a MATLAB cell array
Try textscan, fid = fopen('file.txt'); data = textscan(fid,'%s%s%s'); fclose(fid);

más de 8 años hace | 0

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Area for Values in Column
if you want to delete the rows that are not within your range, it should be, DI = A(:,10)>135 & A(:,10)<315; A(~DI,:) = []...

más de 8 años hace | 0

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How to save into a particular variable space in .mat file?
The same command which I just gave you for your other question. That's why you should read the link! A = rand(100,1); sa...

más de 8 años hace | 0

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How to add a result on a plot.
use num2str to convert the result to string and use it inside text command, text(x_pos, y_pos, ['the root of the function is...

más de 8 años hace | 0

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