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...

4 years 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=...

4 years ago | 1

| accepted

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.

4 years ago | 1

| accepted

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 ...

4 years ago | 1

| accepted

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 ) ) ];

4 years ago | 0

| accepted

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...

4 years ago | 0

Answered

[DISCONTINUED] 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...

[DISCONTINUED] 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...

4 years 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...

4 years ago | 1

| accepted

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 ...

4 years 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.

4 years ago | 1

| accepted

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...

4 years 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 ...

4 years ago | 0

Answered

[DISCONTINUED] 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...

[DISCONTINUED] 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...

4 years ago | 0

Answered

How to manipulate array?

Just use it! Where you are going to use my_columns, just use number_columns, e.g. newMatrix = zeros( number_rows, number_colum...

How to manipulate array?

Just use it! Where you are going to use my_columns, just use number_columns, e.g. newMatrix = zeros( number_rows, number_colum...

4 years ago | 0

Answered

How can I use my CNN after training (Image Recognition)

When you saved the file the network was called 'thisNetwork'. That is what this instruction saves: save('TheTrainedCNN','thisN...

How can I use my CNN after training (Image Recognition)

When you saved the file the network was called 'thisNetwork'. That is what this instruction saves: save('TheTrainedCNN','thisN...

4 years ago | 0

Answered

How to know where the >> are in the command window?

Just use fprintf('AAAAAAAAAAAAAAA\n') instead and it will put the new line at the end so that the >> will be on the next line ...

How to know where the >> are in the command window?

Just use fprintf('AAAAAAAAAAAAAAA\n') instead and it will put the new line at the end so that the >> will be on the next line ...

4 years ago | 0

Answered

Avoiding many if-Statetments in a for-loop

Something like this would seem to do the job, off the top of my head, though I may be over-simplifying it... case1 = V2 && V3; ...

Avoiding many if-Statetments in a for-loop

Something like this would seem to do the job, off the top of my head, though I may be over-simplifying it... case1 = V2 && V3; ...

4 years ago | 0

Answered

What does z(1) and z(2) mean in that context?

z(1) and z(2) mean the same as they would in any code - there is an expectation that z is an array with (at least) 2 values, oth...

What does z(1) and z(2) mean in that context?

z(1) and z(2) mean the same as they would in any code - there is an expectation that z is an array with (at least) 2 values, oth...

4 years ago | 2

| accepted

Answered

Index must be a positive integer less than or equal to the number of test sets.

selectBatch(k) is a cell array, which clearly is not an integer. selectBatch{k} may be what you want instead. That said, you...

Index must be a positive integer less than or equal to the number of test sets.

selectBatch(k) is a cell array, which clearly is not an integer. selectBatch{k} may be what you want instead. That said, you...

4 years ago | 0

Answered

check a condition once and remember it later in the code

Potentially you can change your if statement to the following, but it depends on what nu is as this does not seem to be defined ...

check a condition once and remember it later in the code

Potentially you can change your if statement to the following, but it depends on what nu is as this does not seem to be defined ...

4 years ago | 1

| accepted

Answered

Variable inside timer callback is lost after first iteration in GUI - undefined function or variable

This seems like the opposite problem to what I originally thought it was as I got distracted by the handles and assumed they wer...

Variable inside timer callback is lost after first iteration in GUI - undefined function or variable

This seems like the opposite problem to what I originally thought it was as I got distracted by the handles and assumed they wer...

4 years ago | 1

Answered

Increase levels on colorbar

If you create the colourbar and keep its handle, e.g hColourbar = colorbar( hAxes ); then you can edit the properties of the c...

Increase levels on colorbar

If you create the colourbar and keep its handle, e.g hColourbar = colorbar( hAxes ); then you can edit the properties of the c...

4 years ago | 0

| accepted

Question

Working with 1d vector sequences

This is a problem I seem to come up against quite often in Matlab and have never really found a good solution to. Maybe there i...

4 years ago | 2 answers | 0

Answered

(Index in position 1 exceeds array bounds (must not exceed 1). error is popping up where it does not seem to apply

Well, I don't know about line 12, which (from counting - please indicate which is the line of the error message in future, it wo...

(Index in position 1 exceeds array bounds (must not exceed 1). error is popping up where it does not seem to apply

Well, I don't know about line 12, which (from counting - please indicate which is the line of the error message in future, it wo...

4 years ago | 0

Answered

Store only 4 value from a loop

If you have a nested loop like that you would generally want something like x(t,i) = ... with a 2d output to match the 2 neste...

Store only 4 value from a loop

If you have a nested loop like that you would generally want something like x(t,i) = ... with a 2d output to match the 2 neste...

4 years ago | 0

Answered

Detecting change in sign of values of a column

NewC = find( diff( sign( Data(:,2) ) ) ) + 1;

Detecting change in sign of values of a column

NewC = find( diff( sign( Data(:,2) ) ) ) + 1;

4 years ago | 1

| accepted

Answered

How to reshape a matrix into nx2 matrix?

reshape( A( :, [ 1:2:end, 2:2:end ] ), [], 2 ) You may wish to change the final two arguments to the reshape command in diffe...

How to reshape a matrix into nx2 matrix?

reshape( A( :, [ 1:2:end, 2:2:end ] ), [], 2 ) You may wish to change the final two arguments to the reshape command in diffe...

5 years ago | 0

| accepted

Answered

Unable to use a value of type cell as an index

You are passing in a variable called title to the second function. This will hide the function of the same name so that this in...

Unable to use a value of type cell as an index

You are passing in a variable called title to the second function. This will hide the function of the same name so that this in...

5 years ago | 4

| accepted

Answered

Assining fixed color for zero value

Define a colourmap of size n, assuming n is not huge, and then add black to the front of it n = 7; colourmap = [0 0 0; parula(...

Assining fixed color for zero value

Define a colourmap of size n, assuming n is not huge, and then add black to the front of it n = 7; colourmap = [0 0 0; parula(...

5 years ago | 0

| accepted