已回答
( 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...

7 years 前 | 0

已回答
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

7 years 前 | 0

已回答
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...

7 years 前 | 0

已回答
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...

7 years 前 | 0

已回答
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...

7 years 前 | 0

已回答
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...

7 years 前 | 0

| 已接受

已回答
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(...) ...

7 years 前 | 0

已回答
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, ...

7 years 前 | 0

| 已接受

已回答
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, >>...

7 years 前 | 3

| 已接受

已回答
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','...

7 years 前 | 0

已回答
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-...

7 years 前 | 0

| 已接受

已回答
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 ...

7 years 前 | 1

| 已接受

已回答
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...

7 years 前 | 0

| 已接受

已回答
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...

7 years 前 | 0

| 已接受

已回答
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);...

7 years 前 | 0

| 已接受

已回答
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...

7 years 前 | 0

| 已接受

已回答
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...

7 years 前 | 0

已回答
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 ...

7 years 前 | 0

| 已接受

已回答
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))); ...

7 years 前 | 0

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

7 years 前 | 2

| 已接受

已回答
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...

7 years 前 | 0

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

7 years 前 | 0

| 已接受

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

7 years 前 | 0

| 已接受

已回答
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...

7 years 前 | 0

已回答
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...

7 years 前 | 0

已回答
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...

7 years 前 | 0

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

7 years 前 | 0

| 已接受

已回答
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,:) = []...

7 years 前 | 0

| 已接受

已回答
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...

7 years 前 | 0

| 已接受

已回答
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...

7 years 前 | 0

| 已接受