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Stephen Cobeldick


5.992 total contributions since 2014

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Answered
How to change one line of code?
function y = myfun(x) y = sum(x.^2); end Or if you really only want to sum the first three elements: function y = myfun(x) ...

ongeveer 21 uur ago | 0

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Answered
what's the meaning of a number divide column vertor?
"what's the meaning of a number divide column vertor?" The mrdivide documentation explains at the top of the page that it will ...

ongeveer 21 uur ago | 0

Answered
Saving and uploading data with any file name
"...on how I can fix this" That is easy: fix your save syntax. You seem to have confused high-level file importing/exporting f...

1 dag ago | 0

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Answered
Fill NaN matrix with vector of unequal sizes
CMC_RT(k).RF.GyrNorm(1:10,1) = CMC_RTT.RF.(temp{a})(k,1:10); CMC_RT(k).RF.GyrNorm(1:9,2) = CMC_RTT.RF.(temp{a})(k,11:19); The...

1 dag ago | 0

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Answered
Assign values to a string in Matlab
>> X = 'abcaaabc'; >> Y = num2cell(X) Y = 'a' 'b' 'c' 'a' 'a' 'a' 'b' 'c' >> Y1 = X-97 Y1 = ...

4 dagen ago | 0

Answered
Figures not saving as specific file type regardless of specified extension
Specifying the image file type and specfiying the file extension are two totally different things. Your title "Figures not savin...

4 dagen ago | 1

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Answered
regexprep does not exactly what I want
>> regexprep(Charge,'^[^-+]*','') ans = '-1' '+0' '+1' '-1' '+0' '+1' >> regexp(Charge,'[-+].+$','once','...

4 dagen ago | 1

Answered
Values in cell array keep getting overwritten
Much simpler and much more robust: D = 'path to the main directory'; S = dir(fullfile(D,'img*')); for k = 1:numel(S) F =...

4 dagen ago | 0

Answered
What are variable scopes?
Consider that inside some function you define some variable, e.g.: X = 3; You might then ask yourself, now that I have defined...

4 dagen ago | 0

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Answered
concatenate structs and then plot a specified column
Simpler without conditional statements: D = 'path to the folder/Dati_Finali'; S = dir(fullfile(D,'*.mat')); b = 1; for k = 1...

4 dagen ago | 0

Answered
Count the values inside a cell array considering another cell array
>> Rc = vertcat(R{:}); >> Vc = vertcat(V{:}); >> X = ~cellfun('isempty',Rc) & ~cellfun('isempty',Vc); >> F = @(r,v) sum(r(2,v...

4 dagen ago | 0

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Answered
Saving the values into a mat file error
Rather than this indirect, complex, buggy, obfuscated, strongly inadvisable code: evalstring = sprintf('handles.mystructdata.%s...

4 dagen ago | 0

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Answered
de2bi not working for large decimal number
"Why is that?" Because those functions use double class, and your value is well above flintmax: >> 2^53 % flintmax ans = 9.00...

4 dagen ago | 0

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Answered
Count how many element are inside each cell af a cell array on the basis of an array
>> C = vertcat(V{:}); >> X = ~cellfun('isempty',C); >> F = @(x)sum(x(2,:)<=80); >> M = zeros(size(C)); >> M(X) = cellfun(F,C...

4 dagen ago | 0

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Answered
How to subtract two close numbers?
"..i don't know why it doesn't give exact zero." The decimal values 5.4 and 0.4 cannot be represented exactly using binary floa...

4 dagen ago | 1

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Answered
Find the intersect of two columns from different matrix but keep the corresponding cells from the same row along with the intercept values
>> A = [2,4,6,8,10;2,3,5,3,2] A = 2 4 6 8 10 2 3 5 3 2 >> B = [2,3,5,8,10;1,2,2,2,1] B = ...

5 dagen ago | 0

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Answered
Alternation without for loop
>> N = min(numel(A),numel(B)); >> V = [reshape([A(1:N);B(1:N)],1,[]),A(N+1:end),B(N+1:end)] V = 1 0.5 2 0.2 3 0.4 4 ...

5 dagen ago | 1

Answered
Modify a cell array and obtain a new cell array
The problen is that you try to access a row of GGG which does not exist. You define GGG as a 1x2 cell array: GGG= {[...],[...]...

5 dagen ago | 0

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Answered
Matching closest values to each other
>> [~,idx] = min(abs(bsxfun(@minus,B,A.')),[],2); >> C = [B,A(idx)] C = 39.167 39.342 39.892 39.942 40.592 4...

5 dagen ago | 0

Answered
finding location of logical 1 row wise by column
[idr,~] = find(yourMatrix)

5 dagen ago | 0

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Answered
Difference between ' (single quote) vs " (double quote)?
https://www.mathworks.com/help/matlab/characters-and-strings.html In a nutshell: single quotes define a character vector with ...

5 dagen ago | 0

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Answered
Array vs. Matrix Operations
What "compatible sizes" means is explained on this page: https://www.mathworks.com/help/matlab/matlab_prog/compatible-array-siz...

5 dagen ago | 0

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Answered
SAVE command: How to specify the variable to be saved if it is a variable inside an array. assignin has been used to create the variable from a string in an array.
save using the structure syntax: S = struct('theNameYouWant',x); save(...,'-struct','S')

6 dagen ago | 0

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Answered
How to fill NaN values in 3d array using interpolation?
The simple solution is to download this: https://www.mathworks.com/matlabcentral/fileexchange/4551-inpaint_nans

6 dagen ago | 1

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Answered
how to extract and load images and data from multiple .mat files present in a folder
https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html D = 'path to the folder where the files ar...

7 dagen ago | 1

Answered
creating matrix from a vector
>> v = [0,0,4,6] v = 0 0 4 6 >> n = ceil(v/2); >> w = 1:max(n); >> m = bsxfun(@times,v,bsxfun(@le,w(:),n)) m = ...

8 dagen ago | 1

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Answered
How can I create an input row only excisting randomly only out of -1 and +1?
>> V = [-1,1]; >> X = randi(2,1,23); >> V(X) ans = -1 -1 1 1 1 -1 -1 -1 1 -1 1 -1 1 1 1 -1 1 1 ...

8 dagen ago | 1

Answered
How to extract a value from mat file
S = load(...) S.Fs

8 dagen ago | 0

Answered
Calling Matrix that is indexed, in a for loop
The easiest approach is to use a cell array: T{1} = [1,2]; T{2} = [2,3,4]; T{3} = [3,4,5]; T{4} = [3,4,5]; T{5} = [1,5]; f...

8 dagen ago | 0

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Answered
Question about import a .txt file into matlab
Your code has several issues, the most significant ones are: you incorrectly used the optional third input, apparently to try a...

9 dagen ago | 1

| accepted

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