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

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],...

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],...

5 months ago | 1

| accepted

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...

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...

6 months 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...

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...

1 year 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...

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...

1 year ago | 0

Answered

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 = [...

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 = [...

1 year ago | 1

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...

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...

1 year 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 );

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 );

1 year 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...

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...

1 year 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...

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...

1 year 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...

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...

1 year 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...

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...

1 year 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...

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...

1 year 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?

Combine two or more gaussian components into one Gaussian Mixture (gmdistribution)

Doesn't GC = gmdistribution( [muX; muY], cat( 3, SX, SY ), [1; 1] ); work?

1 year ago | 0

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Answered

divide 3d matrix (840,64,1536) by 1d matrix (1536,1)

A ./ reshape( B, [1 1 1536] );

divide 3d matrix (840,64,1536) by 1d matrix (1536,1)

A ./ reshape( B, [1 1 1536] );

1 year ago | 1

Answered

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.

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.

1 year 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...

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...

1 year 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...

" 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...

1 year ago | 0

Answered

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=...

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=...

1 year 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.

what is wrong with my script?

2:4 means [2, 3, 4] A( [2 4], [2 4] ) would give what you want.

1 year 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 ...

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 ...

1 year ago | 1

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Answered

Matrix creation combining vectors

M = [ repmat( V1(:), [numel(V2), 1] ), repelem( V2(:), numel( V1 ) ) ];

Matrix creation combining vectors

M = [ repmat( V1(:), [numel(V2), 1] ), repelem( V2(:), numel( V1 ) ) ];

1 year 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...

Help with restricting input

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

1 year 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...

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...

1 year 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...

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...

1 year 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 ...

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 ...

1 year 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.

expand length of matrix to fixed value

t = interp1( 1:108, t, linspace(1, 108, 200 ) ); would be one way to do it.

1 year 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...

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...

1 year 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 ...

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 ...

1 year 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...

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