Adam

Last seen: 2 days ago

1,918 total contributions since 2013

Professional Interests: Signal Processing, OOP, Matlab GUI programming, Machine Learning

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Answered
Resize and sum a matrix
If you have the Image Processing Toolbox you can use blockproc something like the following: array2 = blockproc( array1, [n n],...

11 days ago | 1

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Answered
Whats the difference when using [ ] and : ?
key = [1 2 3 4 5 6 7 8 9 10]; res = reshape( key, 2, [] ); would give res = [ 1 3 5 7 9 2 4 6 8 10 ]; The [] indica...

1 month ago | 1

Answered
Get row and column of the closest value of a matrix from a variable
If you are using an up to date version of Matlab (scanning the release notes I think R2019a or later for the particular syntax o...

11 months ago | 0

Answered
How to round the decimal values?
ceil( 0.7954 * 1000 ) / 1000 It should also be noted though that many seemingly 'round' decimal numbers cannot be perfectly rep...

11 months ago | 0

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Problem with loop index
Calculate the indices of all the rows you want to delete , then delete them all in one go afterwards, as e.g. rowsToDelete = [...

11 months ago | 1

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Array indexing nth spaced element
a( 1:n:end )

11 months ago | 0

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Answered
How to remove outlier by 2.5 standard deviations from the mean?
Looking at the help in doc filloutliers this should work: filloutliers(A,'center','mean','ThresholdFactor', 2.5) replacing A...

11 months ago | 1

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Answered
How to make subplot accept the positions like matrix?
doc ind2sub This will convert linear indices to n-dimensional subscripts. e.g. [p(1), p(2)] = ind2sub( [3, 3], 2 );

11 months ago | 1

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Answered
input vector fra edit text in guide GUI
sscanf( str, '%d' ) or str2num( str ) would both work if the input is e.g. "1 2 3 4 5 6", although the first returns a column...

11 months ago | 0

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Answered
Defining a time varying function
if t < t0 result = a; else result = b; end gives what you want for this simple case, provided t0, a, b and t are al...

11 months ago | 0

Answered
i have different result
Just get rid of the loop and vectorise: ProbDG=1-(1./T); DGT=-log(-log(ProbDG)); It can be done in a loop, but it's the end o...

11 months ago | 0

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Answered
What are the options to use a script in app designer? and how to define it?
You don't have to, but you should want to as scripts are not suitable for going beyond just trying things out. Once you want to...

11 months ago | 0

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Answered
How to get handle to legend in a specific axes?
Legends are parented by the figure, not the axes, so you get a list of figure children like this: >> get( gcf, 'Children' ) an...

11 months ago | 0

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Answered
Combine two or more gaussian components into one Gaussian Mixture (gmdistribution)
Doesn't GC = gmdistribution( [muX; muY], cat( 3, SX, SY ), [1; 1] ); work?

12 months ago | 0

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Answered
divide 3d matrix (840,64,1536) by 1d matrix (1536,1)
A ./ reshape( B, [1 1 1536] );

12 months ago | 1

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How do I extract the rows that have value 0 in one array from another new array?
newArray( ~thisArray, : ) where thisArray is the one you show here.

12 months ago | 1

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Answered
What type of data (200 x 200 x 200)
It's an array. A 3d array to be precise, but just an array. A vector (as defined by isvector(...) )is an nx1 or 1xn array A m...

12 months ago | 1

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Answered
" bsxfun(@rdivide..." Explain Use in Code
rgbh_e = bsxfun(@rdivide, rgbh_e, rgbh_e(4,:)); divides rgbh_e by by the 4th row of rgbh_e, on a per row basis - i.e. each elem...

12 months ago | 0

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In which Matlab version was rng() introduced?
https://uk.mathworks.com/help/matlab/release-notes.html?rntext=rng&startrelease=R2006a&endrelease=R2019b&groupby=release&sortby=...

12 months ago | 1

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Answered
what is wrong with my script?
2:4 means [2, 3, 4] A( [2 4], [2 4] ) would give what you want.

12 months ago | 1

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Answered
Arguments block syntax not being recognised
This was only introduced in 2019b (you can see at the bottom of the help page for 'arguments'). It is one of the disadvantages ...

12 months ago | 1

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Answered
Matrix creation combining vectors
M = [ repmat( V1(:), [numel(V2), 1] ), repelem( V2(:), numel( V1 ) ) ];

12 months ago | 0

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Answered
Help with restricting input
validateattributes( number, { 'numeric' }, { 'scalar', '>=', 1, '<=', 100, 'integer' } ) You would have to put a message togeth...

12 months ago | 0

Answered
MATLAB Answers Wish-list #5 (and bug reports)
I realised I posted this in the ancient wishlist thread before. Can we not have some white space back between answers? Since t...

12 months ago | 1

Answered
How to ignore letters in a numeric cell?
cellfun( @(x) str2double( erase( x, 'mm' ) ), pin_radius ) should convert them to an array of doubles. If you are using pre R2...

12 months ago | 1

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Answered
why do I get Array indices must be positive integers or logical values?
It means pretty much exactly what it says. In Matlab x1, as you create it, is an array of values representing your function at ...

12 months ago | 0

Answered
expand length of matrix to fixed value
t = interp1( 1:108, t, linspace(1, 108, 200 ) ); would be one way to do it.

12 months ago | 1

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Answered
Create a plot with a drop down menu in an App
app is your main application object. You can add properties to this yourself, which you can then access in any of its functions...

12 months ago | 1

Answered
Area plot does not recognize colormap
What was your 'older Matlab version'? If you keep the handle from an area plot you get an object (or objects, if you feed it a ...

12 months ago | 0

Answered
Wish-list for MATLAB Answer sections.
Well, after the last update of Matlab Answers my biggest wish is now to put the white space back between the answers! I don't k...

1 year ago | 0

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