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[DEPRECATED] What frustrates you about MATLAB?
Some frustration not about Matlab but about the answers forum here: These myriads of spam "questions" related to relationship is...

11 years ago | 1

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detecting the difference of the sequence
Why do you want to detect first 4 characters from the left and then the last 4 digits? My suggestion is: fid=fopen('test.t...

11 years ago | 1

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How to add vector from cell?
Yes: sum(cat(3,X{:}),3) the same for Y and Z. Comment: I have chosen to use the third dimension as this is not exist...

11 years ago | 0

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Editing a .c file using a .m file
Well, the pointer is at the beginning of the file and that's where the data is written. So the functions behave as they should. ...

11 years ago | 0

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appending element to vector
As Guillaume has mentioned, that's not the usual way to go. Assume you want to plot the data (which requires equally sized array...

11 years ago | 1

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for loop number of elements
Depending on Ui, dataind and longm, this could work: winddivergencex(n,:)=... or winddivergencex(:,n)=...

11 years ago | 0

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How to create rgb image in matlab?
Do you want to read or to create an image? Read: image=imread(filename); Create: image=zeros(300,400,3); %initi...

11 years ago | 3

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How can I find the max and min amongst a set of grouping variables?
Since you didn't write if every number will occur in the first column, I allow for "missing" numbers here (it doesn't make a big...

11 years ago | 2

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Application of For Next Statement?
Please make your code readable using the {}Code button on top of the edit window in future. You are overwriting a in every l...

11 years ago | 0

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Replace elements in a row matrix randomly
Is your specific algorithm necessary? I mean, that you first start with a random A and then add 1s until the condition is met? I...

11 years ago | 0

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Generating a series of marices
m=cell(size(a,1),1); for k=1:size(a,1) m{k}=a(k,:); end

11 years ago | 0

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I have an excel file containing text and numbers, xlsread not import the columns containing text. what should I do?
It does, it just returns it in another parameter. From Matlab help: [ndata, text, alldata] = xlsread('myExample.xlsx') ...

11 years ago | 4

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How to take a rectangular matrix of numbers and turn it into a matrix of the form (row, column, number)?
If m is your matrix: m=rand(3,2); [1+mod(0:numel(m)-1,size(m,1))' 1+fix((0:numel(m)-1)/size(m,1))' m(:)]

11 years ago | 1

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How to find four coordinates of inner rectangle?
vsum=sum(image,1); hsum=sum(image,2); top=find(vsum,1,'first'); bottom=find(vsum,1,'last'); left=find(hsum,1,'firs...

11 years ago | 1

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Error using save funktion
What is the full path of the folder you want to save the file in? Is it by chance F:\WS\Aufgabe\Henyey-Greenstein\IdentifyG\ ...

11 years ago | 0

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How can I find the coordinates of a known vector, within a larger vector?
You can use strfind: Vector1 = [3 2 4 1 3 2 4 1 3 2 4 2 4 3 4 3 1 4 2 2 3 4 1 4 2]; Vector2 = [1 4 2 3 1 4 2 4 2 3 4 3 ...

11 years ago | 2

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What's the error in my code?
x > (i*T) && x < ((T*i)+(D*T)) You cannot use && in case of arrays. Use & instead. if x > (i*T) && x < ((T*i)+(D*T)) ...

11 years ago | 0

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How to plot the function below in cylindrical coordinates?
You need to convert your polar coordinates to cartesian coordinates: r=1:.1:2; %radius theta=0:pi/32:2*pi; %some angle ...

11 years ago | 1

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How to generate random numbers 0 and 1
e.g. randi(2)-1 or fix(rand*2) Best regards, Michael

11 years ago | 1

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how to make computations with a cell array?
Dear Simo, min(cellfun(@(x) x(5),results(:,1))) does the job. Best regards, Michael

11 years ago | 1

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How to get back red waitbar?
I'm working with 2014a, but if they didn't change the entire waitbar, you should be able to modify the color this way: h =...

11 years ago | 0

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date and time serial conversion
You can use datenum: datevec(datenum('04.11.2014 12:48','dd.mm.yyyy HH:MM')) ans = 2014 11 ...

11 years ago | 0

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Replacing NaN values with average values of the nearest numbers?
Hi Isaac, you can use interp1: nandata=[2;3;5;7;nan;nan;12]; xdata=(1:length(data))'; data=interp1(xdata(~isnan(n...

11 years ago | 7

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Sorting cells with headers... how to start sorting at row 2
You have mixed up a bit in your suggestion of the solution: sA=[A(1,:);sortrows(A(2:end,:),2)];

11 years ago | 0

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index must be a positive integer or logical.
I dont know how this equation should read, but might there be a * missing? You write C1=(wn(z+sqrt(z^2-1))+xdz)/(2*wn*(sqrt(...

11 years ago | 0

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Why won't one of my plot points show
The point is there, it's just difficult to see this single pixel. If you really want to plot single points, better use different...

11 years ago | 2

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Problem with Imhist method
The x scale depends on the data type of the image. I guess in your case, Zoom is of uint16? Then, the limits of the data are [0 ...

11 years ago | 0

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How to find the lines of two words repeated many times in a .txt file
You just have to extend your if-structure: if ischar(tline) if found if strcmpi(tline,'END') found=false; ...

11 years ago | 0

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Change size of plotyy figure before saving.
You need the handles of both axes. You already use these handles as first output argument of plotyy in a variable you call ax: ...

11 years ago | 0

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Dimension mismatch error in matlab
In the _first_ loop, you either have not yet initialized x or you have initialized it as n-x-41 array. In any case, after the fi...

11 years ago | 1