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Adam


1,866 total contributions since 2014

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

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Answered
Reference to non-existent field error
exist('handles.mystructdata') does not work for struct fields. isfield( handles, 'mystructdata' ) is what you should use to c...

2 days ago | 1

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Answered
How to replace values of certain rows in a matrix?
a( [2 3], : ) = repmat( b, 2, 1 ) A bit more generally: indicesToReplace = [2 3]; a( [2 3], : ) = repmat( b, indicesToReplace...

2 days ago | 0

Answered
FFT step by step help
The lpad part is a little suspicious. If you have an odd length of signal it will not work as is. Apart from that though: xdf...

3 days ago | 1

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Answered
Index exceeds the number of array elements
[A, index] = unique (A); replaces what was in A with the result of unique (i.e. all the non-unique values removed) So indexing...

3 days ago | 0

Answered
Get position when using uicontextmenu
I use code like this to position my context menu under the cursor on an axes, though if you already have the figure handle at th...

5 days ago | 0

Answered
replace duplicate value by 0 in matrix or vector
[C,ia] = unique( b ); b( setdiff( 1:numel(b), ia ) ) = 0;

5 days ago | 0

Answered
Unrecognized function or variable 'axes34_CreateFcn'.
Unless you have explicitly created one axes don't have a createFcn set by default, so I assume you must have asked it to create ...

6 days ago | 0

Answered
disp function error in matlab coder
disp is not supported by Coder. sprintf should work though.

6 days ago | 0

Answered
How to create empty matrix in matlab?
myMatrix = cell( 10 ); would create a 10x10 cell array. If all your images are the same size though you'd be better off with t...

6 days ago | 0

Answered
How can I display a specific frame in my image series ?
image10 = allImages( :, :, 10 ); images2_5 = double( allImages( :, : [2 5] ) ); image2_minusImage5 = diff( images2_5, [], 3 );...

10 days ago | 0

Answered
extract logical locations that match array
B .* A would seem to give what you want

11 days ago | 0

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Answered
how to select the desired range of each dimension from the 3d array?
new_precipitation = precipitation( 1400:1439, 500:519, 700:900 ) would create what you ask for though it will be 1 bigger in ea...

12 days ago | 0

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Answered
Convert Z dimension to X dimension
myArray(:) will do for that kind of reshape, where myArray is obviously the array you start with.

20 days ago | 0

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Answered
Initial centroids selection - Kmeans
doc kmeans shows the idx = kmeans(X,k,Name,Value) function signature. If you look at the options for 'Name', 'Value' pairs y...

24 days ago | 0

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Answered
MATLAB Answers Wish-list #5 (and bug reports)
Has there been any further thought on changing what is considered a compulsory field for users asking a question? Title, body a...

24 days ago | 2

Answered
How to define range using a variable in xlsread?
doc sprintf can create a string out of variables, e.g. columnStr = 'B'; startRow = 50; endRow = 50; sprintf( '%s%i:EHI%i', ...

25 days ago | 0

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Answered
SOM codebook vectors output
net.IW{1} will give you the codebook vectors/weights. For example: x = simplecluster_dataset; net = selforgmap([8 8]); net ...

27 days ago | 0

Answered
How to automatically put the asked values in function by script?
You would have to define a function that takes two arguments (or an array of inputs to add), e.g. for an example of a fixed two ...

27 days ago | 0

Answered
Dimensions of arrays being concatenated are not consistent.
Results_Values=[Amp',N',T',[velocity NaN].'];

1 month ago | 1

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Answered
Could anyone help me how to store the result together in single matrix.
Making minimal changes to your code: B=[1 2; 1 3; 2 5; 2 4; 3 5; 4 6; ...

1 month ago | 0

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Answered
How to generate random matrix from another one?
newMatrix = reshape( oldMatrix( randperm( numel( oldMatrix ) ) ), size( oldMatrix ) ); should work, though I'm sure there are n...

1 month ago | 0

Answered
Array indices must be positive integers or logical values
for i = length(Mag) doesn't make sense as this will just evaluate to a scalar. I don't see how this would be the source of you...

1 month ago | 0

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Answered
Put label in colorbar
The label object should have a position that you can edit. The rotation of 270 rather than 90 moves it inside the tick labels f...

1 month ago | 1

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Answered
Determination of data points in each cluster of K-means algorithm
accumarray( idx, 1 );

2 months ago | 0

Answered
undefined function 'isnan' for input arguments of type 'table'
Assuming data is a table, try using curley braces { } instead of parentheses ( ), i.e. y=data{:,20}; X=data{:,[17:19,21:29]}; ...

2 months ago | 0

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Answered
Transfer variables within function with different properties.
Either return it as an output argument from the previous function and pass it in as an input argument or store it as a class pro...

2 months ago | 1

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Answered
Using the function fmincon
The first argument needs to be a function handle, not a call to the function, although your function is FUNCTION so I'm not sure...

2 months ago | 0

Answered
Define function for rounding to precision
Usual scenario would be to multiply by 10^decimalPlaces, ceil and then divide by 10^decimalPlaces I would imagine. e.g. ceil( ...

2 months ago | 1

Answered
How to plot the curve?
R = B ./ ( 1 + k'/2 ); figure; plot( R ) or R = bsxfun( @rdivide, B, ( 1 + k'/2 ) ); for earlier versions of Matlab that don...

2 months ago | 0

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Answered
max value in a repetitive vector
maxes = [vec( diff( vec ) < 0 ), vec(end)]; works if it is as structured as your example always, where vec is your vector. If ...

2 months ago | 1

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