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Combining Vector in a matrix
A cell array is very useful when you want to combine strings and numerical values into a single matrix. Let's build one: Mo...

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How to cut the end of a string which follows a special character?
Many options, including: str = 'sahdklsjf_sdfs' out1 = str(1:find([str '_']=='_',1,'first')) Also take a look at TEX...

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Plotting 1/x correctly
Your plotting values against their index. And indeed, since x(3) is not equal to 3, but 0.2020, y(3) is not 1/3. You can use pl...

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permnsub(V,N, IX)
Subset of all permutations with repetition

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Problem running Windows executable using "system"
I have an executable (PROG.exe) that runs perfectly within a cmd-shell in windows 7. However, when I call it from within matlab ...

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Matlab jokes or puns
MatLab excels Excel while Excel does not matlab MatLab.

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Why when we try to represent a sinus function we use a cosinus expression some times and cosinus another times like the case in matlab?
Both a cosine and a sine are sinusoids, but one is shifted in phase compared to the other cos(x) = sin(x + (pi/2))

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Find a subset of unique permutations
Why not use NCHOOSEK? A = [5 6 2 4 7]; nchoosek(A,3) ans = 5 6 2 5 6 4 ...

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error when sum a vector
Most likely you have declared a *variable* called sum, which now clashes with the *function* sum In your case, you then want ...

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How can I find maximum before a certain element in my matrix
Just for fun, as a one-liner: B = [5 8 5 2 6 9 10]; MaxBeforeMin = max(B(1:find(B==min(B),1,'first')))

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How can I find the maximum element of each column of a cell array
Life would be much easier if you didn't have your data arranges like this in the first place. How did you get this cell array? I...

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how to concatenate vectors
If all elements of T are row or column vectors, you can use VERTCAT or HORZCAT, using comma-separated list expansion: T1 = ...

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

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Start plot errorbar() at 0 ?
You can change limits of the axis using the commands YLIM CurYLim = ylim % get the current Y limits ylim([0 CurYlim(2)])...

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Editing a function to return a value that shows how many times a recursive function is called
You can add a second output argument function [result, CallN] = myFunction(n, CallN) if nargin==1, CallN = 1 ;...

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replace number by string
% conversion rules V(k) corresponds to S(k): V = [ 3 4 6 9 1] ; S = {'AA','B','CCC','D','EEE'} ; Value...

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How to normalize values in a matrix to be between 0 and 1?
This can be simply done in a two step process # subtract the minimum # divide by the new maximum normA = A - min(A(:)) ...

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Hi, guys. How would one extract the lower triangle of a matrix without using the tril function and witout a for loop?
A = rand(5) ; % [c,r] = meshgrid(1:size(A,1),1:size(A,2)) trilA = A ; trilA(c>r) = 0 diagA = A ; d...

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Count amount of 0's and 1's in an array
Since the array is always an alternation of zeros and ones N = diff([0 find(diff(A)) numel(A)]) will produce the runs of...

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I need help with fixing the error in my for loop equation
You want to put the formula for H out of the loop for .. % ask for values here end % summing formula here

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Fibonacci program makes matlab go busy forever
The Nth matrix power of the square matrix [1 1 ; 1 0] will give you three Fibonacci numbers at once, namely the (N+1)-th, the N-...

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how to make string vector?
You realise that, in ML, ['18','29'] is exactly the same as the single character array '1829' ? a = [18, 29] str = sprin...

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how to find nearest values of all elements of a matrix to another matrix in matlab
Take a look at *NEARESTPOINT* as this function does *exactly* what you want and is pretty damn fast, if I say so myself :-) <...

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How can I insert missing rows in a matrix
This is not really trivial. Here is one approach: x=[1 4; 4 6;2 3;3 2;4 2;1 3] Data = x(:,2) ; SerialNumber = x(:,1) ...

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Reading and separating data
My approach would be: 1) read in all the lines of the text file as strings using ';' as a delimiter C = textread('myfile...

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How Can I Make a Matlab Code generate multiple separate matrices
To generate one 4-by-4 matrix with a specific value you can use various approaches Value = 3 ; A = repmat(Value,4,4) ...

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how to find nearest values of all elements of a matrix to another matrix in matlab
A = [1 5 7 3 2 8] B = [4 12 11 10 9 23 1 15] TMP = bsxfun(@(x,y) abs(x-y), A(:), reshape(B,1,[])) [D, idxB] = min...

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How to convert Hex data into decimal data?
Hexadecimal values are stored in strings in MatLab. HexValue = 'FE' hex2dec = hex2dec(HexValue) DataHex = {'B5','C...

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What is Arithmetic mean filter ?
The arithmetic mean is the mathematical term for the "mean", i.e., the sum of the elements divided by the number of elements. ...

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Replace String with a NaN in table
Take a look at CELL2FLOAT <http://www.mathworks.com/matlabcentral/fileexchange/19730-cell2float>

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