Community Profile Last seen: Today 2013 以来アクティブ

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

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how to create a vector with known indices numbers
result = vector( positions ); will give you this, if what you mean is you want the numbers from those positions of vector rathe...

8日 前 | 0

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what does k = 0:25.5:255 function means
doc colon It means create an array starting at 0, incrementing by 25.5 each time, with a maximum value of 255. Easiest way to ...

9日 前 | 0

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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],...

10ヶ月 前 | 2

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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...

11ヶ月 前 | 1

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年以上 前 | 0

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年以上 前 | 0

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年以上 前 | 1

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

1年以上 前 | 0

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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年以上 前 | 1

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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年以上 前 | 1

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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年以上 前 | 0

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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年以上 前 | 0

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年以上 前 | 0

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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年以上 前 | 0

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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年以上 前 | 0

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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年以上 前 | 0

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

1年以上 前 | 1

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年以上 前 | 1

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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年以上 前 | 1

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" 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年以上 前 | 0

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年以上 前 | 1

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

1年以上 前 | 1

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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年以上 前 | 1

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

1年以上 前 | 0

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

1年以上 前 | 0

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年以上 前 | 1

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年以上 前 | 1

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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年以上 前 | 0

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

2年弱 前 | 1

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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...

2年弱 前 | 1