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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

etwa 21 Stunden 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...

ein Tag 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 Tage 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' '...

3 Tage 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...

3 Tage ago | 0

| accepted

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 Tage 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 Tage ago | 2

| accepted

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 Tage ago | 0

| accepted

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 Tage ago | 0

Submitted


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

5 Tage 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 Tage 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 Tage 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 Tage 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...

5 Tage ago | 1

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

5 Tage ago | 1

| accepted

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 Tage 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 Tage ago | 1

| accepted

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 Tage 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 Tage 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 ...

6 Tage 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...

6 Tage 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 Tage 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 Tage 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 Tage 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 Tage 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 Tage 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 Tage 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 Tage 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...

7 Tage 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 ...

7 Tage ago | 0

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