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Reordering data based on a separate cell array
B = {'Si','W','Ou','In','We','Ru','Cy','El','St','Jo', 'In'} % example data Collections = { {'Si','St','W'},{'Ou','Jo','R...

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How to place NaN at diagonal position in cell array?
a={[],-1,-1,0.8,-0.7,[],[]; [],[],0.9,1,[],-0.9,0.6; -1,[],[],0.9,0.2,[],0.8} sz = size(a) out = repmat({NaN}, sz + [0 1...

presque 8 ans il y a | 1

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How to place NaN at diagonal position in cell array?
Put NaNs on the diagonal: tf = eye(size(a))==1 a(tf) = {NaN}

presque 8 ans il y a | 0

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Move all NaN to end of matrix columns.
10+ years ago, I submitted the function *sortlind* to the Matlab File Exchange, which returns linear indices (rather than sub in...

presque 8 ans il y a | 0

A soumis

sortlind(A, varargin)
sorts input and returns linear indices for parallel sorting

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difference between normalization -1 to 1 and 0 to 1
The differences include the min, max, range, mean, median, variance, and many more properties of the normalised data.

presque 8 ans il y a | 0

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exponential fit base 10
Your plot command is incorrect, it seems (f2 is the fit result, not an x-value). So, try this: plot(freq, f2(freq), 'r-') ...

presque 8 ans il y a | 0

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How to begin axis from another value and make it a 0 point in plot matlab?
1) change the limits plot(x,y) xlim([23 100]) 2) change the data (not recommended) plot(x,y-23)

presque 8 ans il y a | 1

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convert cell into double with diferent cell sizes
You can my PADCAT function to concatenate vectors with different lengths. It is available at the Matlab File Exchange: <https...

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Specify row and column independently to update matrix?
doc sub2ind

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how to permute all combinations of this vector??
This is one approach: N = 4 ; [b{1:N}] = ndgrid([0 1]) c = reshape(cat(N+1, ones(size(b{1})), b{:}), [], N+1)

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How do I fprintf a title for every third iteration in a loop?
In pseudocode it would look like this: if mod(linecounter,3)==0 print header end print line linecounter = li...

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Question

Why are people deleting answers?
Occasionally I see answers being deleted by their authors. This is rather unfortunate, especially if the answer is perfectly val...

presque 8 ans il y a | 1 réponse | 2

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réponse

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NEW MATRIX WITH IF CONDITIONS
No need for loops or ifs: % data D1 = [ 10 20 30 40 50 60] S1 = [ 1 0 0 1 1 0] % engine D2 = zeros(si...

presque 8 ans il y a | 0

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store the index of nanvalues
% data A = [ 1 2 3 4 3 NaN NaN 5 NaN 7 ] % engines tf = ~isna...

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While all elements are not equal to NaN
*not* (~), *all*, and *isnan* are your friends. If A is your array, while ~all(isnan(A(:))) ... end

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Why is my code running for forever?
You never change *n* inside the second while loop → T(n) never changes → *T(n) <= Tmax* always evaluates to true → inf...

presque 8 ans il y a | 0

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Can matlab return the interval of 1's and 0's?
Given your replies to the comments, you could store the result in a N-by-2 matrix, where the first row would hold the start indi...

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Bed of Nails from vectors - inverse of find()?
% input N = 5 ; M = 4 ; a = [1 3 ; 2 4 ; 1 4 ; 1 2 ; 3 4] % engine in one line XX = full(sparse(repmat(1:N, s...

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Insert 0s in a column matrix with an if function
Something along these lines? T1 = [1;2;4;6;9;10] B = [1;1;1;1;1;1] T2 = 1:10 A(T2) = 0 A(T1) = B

presque 8 ans il y a | 0

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Bed of Nails from vectors - inverse of find()?
N = 5 ; M = 4 ; a = [1 3 ; 2 4 ; 1 4 ; 1 2 ; 3 4] X = zeros(N,M) X(sub2ind([N M], repmat(1:N, size(a,2), 1)', a)...

presque 8 ans il y a | 0

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Grouping rows on the first two columns
A = [13 30 7 13 30 6 13 40 5 13 40 6 12 30 7 12 37 5] ; % engine [B,~,gi] = unique(A(:,[1 2...

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Using rows of different files to create a matrix
% Load in the data and store in cells for k=1:6, filename = ... C{k} = MyLoadFile(filename) ; % C{k} is a N-by-...

presque 8 ans il y a | 0

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How to find the mean intensity of an image greater than a threshold?
IM = rand(100,100) ; % test image threshold = 0.3 tf = IM > threshold RequiredValue = mean(IM(tf))

presque 8 ans il y a | 0

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error in if else
In Matlab, indexing is done by round brackets, and concatenation by square brackets: A = [1 2 3] B = [A 4 5] % concate...

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How to properly input a range in a vector
A = magic(4) range = ':' % in a variable B = subsref(A,substruct('()',{range, 1})) But i do think there are easier w...

presque 8 ans il y a | 1

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I have an extra 'ans' I don't want to be shown, how do I remove it?
The ans is the result of your function call without output arguments and no-semicolon >> Ass_3_Question_3b The fact that...

presque 8 ans il y a | 1

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How to combine two cell arrays of the same size without for loop?
Here is an elegant way: A = {1,2 3 4 5} B = {11,12,13,14,15} C = arrayfun(@(k) [A{k} B{k}], 1:numel(A), 'un', 0) ...

presque 8 ans il y a | 0

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How to fill cell array with random numbers without for loop?
Your definition of the function is incorrect. To fill a cell array with random numbers: startSeedsX=arrayfun@(@() rand*100,...

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How to compute Permutation with repetition, (One Value From Each Vector Only)?
A = [50 60 70 80] ; B = [10 30 90 100] ; C = [100 500 700 1000] ; % get all combinations by taking elements from ...

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