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Stephen Cobeldick


5 893 total contributions since 2014

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Answered
Using strfind to find character index in word
>> HangWord = 'each'; >> Guess1 = 'e'; >> index = strfind(HangWord, Guess1) index = 1

en dag ago | 0

Answered
Variable in Text [Matlab]
You can use dynamic fieldnames: https://www.mathworks.com/help/matlab/matlab_prog/generate-field-names-from-variables.html Alt...

2 dagar ago | 1

Answered
Error using accumarray First input SUBS must contain positive integer subscripts.
"I have already read all questions and answers about it here, cant figure out whats wrong." After reading many answers, you sho...

3 dagar ago | 0

Answered
Find cells that start with text and combine it with next cell
>> C = {'Test1';'10v';'20va';'30v';'50v';'65v';'Test2';'80v';'100v'} C = 'Test1' '10v' '20va' '30v' '...

4 dagar ago | 0

Answered
Move selected column from a matrix to another
Replace the loop with this: idx = M(310,:)>=Xmin & M(310,:)<=Xmax & M(620,:)>=Ymin & M(620,:)<=Ymax; x(:,idx) = M(:,idx); Not...

4 dagar ago | 0

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Answered
Create variable from an excel entry
This should get you started (note that I named the variable out rather than Plot, as it is bad practice to use names which only ...

4 dagar ago | 0

Answered
Main diagonal operations problem
Using Roger Stafford's FEX submission randfixedsum (must be downloaded first): https://www.mathworks.com/matlabcentral/fileexch...

4 dagar ago | 2

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Answered
Mean matrix of different size matrices in one cell array
C = cellfun(@(m)mean(m,1),A, 'uni',0); B = cat(1,C{:})

4 dagar ago | 0

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Answered
Position of the left nearest one value in a vector
>> v = [0,0,1,0,0,0,1,1,1,1,0,0,1,1,1,0,0,1,0] v = 0 0 1 0 0 0 1 1 1 1 0 0 ...

4 dagar ago | 0

Submitted


Next Available Filename
Returns the next unused file or folder name. The name is created by incrementing a numbered suffix.

5 dagar ago | 6 downloads |

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Answered
remove repeated rows to produce two new matrices
An old-fashioned way: a = [0.359883241;0.277815278;0.247562838;0.26249033;0.226989582;0.213157025;0.207067988;0.204762201] b =...

5 dagar ago | 0

Answered
Count how many elements are present inside arrays
>> A = hist(P,V) A = 2 2 2 1 2 1 2 2 2 2 1 1 1 >> B = hist(F,V) B = 2 1 2 1 2 0 2...

5 dagar ago | 0

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Answered
How can I prealloate a comlex-valued matrix?
"How can I prealloate a comlex-valued matrix?" A = complex(zeros(10000,500)); ... your loop here https://www.mathworks.com/he...

5 dagar ago | 1

Answered
How to change function coefficients?
Following the guidelines given in the MATLAB documentation: https://www.mathworks.com/help/matlab/math/parameterizing-functions...

6 dagar ago | 1

Answered
mkdir and simulations problems
You can download my FEX submission nextname: https://www.mathworks.com/matlabcentral/fileexchange/64108-next-available-filename...

6 dagar ago | 1

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Answered
How to set up Vectorization properly?
>> reshape(bsxfun(@plus,(1:4).',0:16:16*3),1,[]) ans = 1 2 3 4 17 18 19 20 33 34 35 36 49 50 51 52 MATLAB ve...

6 dagar ago | 0

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Answered
Image display with uint8 and double
It seems that you have a "binary" image with values 0 and 1, which is stored as uint8. Because floating-point images are assume...

6 dagar ago | 1

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Answered
could anyone help me how to display the position of all the numbers present in matrix.
A simple method that includes all numbers (because zeros are also numbers): >> A = [1,2,3,0;5,6,0,8;9,10,11,12] A = 1 ...

6 dagar ago | 0

Answered
Finding the average by excluding some values
>> Area= [ 1 2 3 4 5 1 1 1 1 12 2 3 4 5 121 145 190 500]; >> mean(Area(Area>10)) ans = 193.6

6 dagar ago | 0

Answered
storing data in a matrix from a nested loop
No loops required: >> d1 = [0,0,2;0,0,-2] d1 = 0 0 2 0 0 -2 >> d2 = [0,0,15;0,0,13] d2 = 0 ...

7 dagar ago | 1

Answered
could anyone help me to calculate the euclidean distance for the matrix.
>> B = sqrt(sum(bsxfun(@minus,permute(A,[1,3,2]),permute(A,[3,1,2])).^2,3)) B = 0.00000 2.99851 2.56248 0.72363 2...

7 dagar ago | 0

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Answered
image the same and different
You swapped the order of the output arguments when you called the function. Here is the function definition: function [transfo...

7 dagar ago | 0

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Answered
Subtract raws of a matrix from an array
MATLAB versions prior to R2016b: >> C = bsxfun(@minus,Q,M) C = 9 4 11 5 7 5 6 9 9 9 11 7...

7 dagar ago | 0

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Answered
Count the number of same elements in an array
Your 1st example: >> V = [ 1 2 4 3 4 2 3 5 6 4 5 6 8 4 2 3 5 7 8 5 3 1 3 5 7 8 9 5 3 2 4 6 7 8]; >> C = hist(V,1:max(V)) C = ...

7 dagar ago | 2

Answered
picking up data file in each iteration
"so how can automatically pick file in every itteration inside for loop ?" Following the outlines given in the MATLAB documenat...

7 dagar ago | 0

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Answered
How to reshape a square matrix diagonally to a vector?
>> A = [0,1,0;1,1,1;1,1,0] A = 0 1 0 1 1 1 1 1 0 >> V = 1:sum(size(A))-1; >> W = fi...

7 dagar ago | 2

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Answered
What is defined as an integer type, when calling validateattributes?
Lets read the validateattributes documentation, and see what it says. All of its calling syntaxes start with the exactly same t...

7 dagar ago | 2

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Answered
Index exceeds array bounds, when call a function with struct parameter
A structure is an array. It can be empty, or scalar, or have size 2x3, or whatever size you want, just like any otther type of a...

7 dagar ago | 0

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Answered
Regexp with a list of keywords
Using a simple lookaround assertion: https://www.mathworks.com/help/matlab/matlab_prog/regular-expressions.html#brchk1t >> key...

8 dagar ago | 0

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Answered
GUI calls function1 which has a uitable and callback...
The guidata documentation states that its first input argument must be a handle to any graphics object in your GUI. What is its ...

8 dagar ago | 0

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