Answered
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...

11 years ago | 1

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Answered
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...

11 years ago | 0

Answered
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...

11 years ago | 0

Submitted

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

11 years ago | 1 download |

5.0 / 5

Question

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 ...

11 years ago | 0 answers | 0

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answers

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

11 years ago | 137

Answered
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))

11 years ago | 1

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Answered
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 ...

11 years ago | 2

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Answered
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 ...

11 years ago | 2

Answered
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')))

11 years ago | 1

Answered
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...

11 years ago | 1

Answered
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 = ...

11 years ago | 3

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Solved

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...

11 years ago

Answered
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)])...

11 years ago | 0

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Answered
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 ;...

11 years ago | 1

Answered
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...

11 years ago | 0

Answered
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(:)) ...

11 years ago | 8

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Answered
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...

11 years ago | 0

Answered
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...

11 years ago | 1

Answered
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

11 years ago | 0

Answered
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-...

11 years ago | 5

Answered
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...

11 years ago | 1

Answered
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 :-) <...

11 years ago | 1

Answered
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) ...

11 years ago | 0

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Answered
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...

11 years ago | 0

Answered
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) ...

11 years ago | 1

Answered
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...

11 years ago | 1

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

11 years ago | 2

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Answered
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. ...

11 years ago | 0

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

11 years ago | 1