1,866 total contributions since 2014

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

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...

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

| accepted

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...

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...

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

| accepted

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...

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...

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;

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 ...

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.

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...

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 );...

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

extract logical locations that match array

B .* A would seem to give what you want

11 days ago | 0

| accepted

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...

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

| accepted

Answered

Convert Z dimension to X dimension

myArray(:) will do for that kind of reshape, where myArray is obviously the array you start with.

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

| accepted

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...

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

| accepted

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...

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', ...

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

| accepted

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 ...

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 ...

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].'];

Dimensions of arrays being concatenated are not consistent.

Results_Values=[Amp',N',T',[velocity NaN].'];

1 month ago | 1

| accepted

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; ...

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

| accepted

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...

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...

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

| accepted

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...

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

| accepted

Answered

Determination of data points in each cluster of K-means algorithm

accumarray( idx, 1 );

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]}; ...

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

| accepted

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...

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

| accepted

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...

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( ...

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...

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

| accepted

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 ...

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

| accepted