Respondida
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; ...

alrededor de 6 años hace | 0

Respondida
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...

alrededor de 6 años hace | 2

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Respondida
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...

alrededor de 6 años hace | 0

Respondida
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 ...

alrededor de 6 años hace | 1

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Respondida
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...

alrededor de 6 años hace | 1

Respondida
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...

alrededor de 6 años hace | 0

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Pregunta

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...

alrededor de 6 años hace | 2 respuestas | 0

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respuestas

Respondida
(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...

alrededor de 6 años hace | 0

Respondida
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...

alrededor de 6 años hace | 0

Respondida
Detecting change in sign of values of a column
NewC = find( diff( sign( Data(:,2) ) ) ) + 1;

alrededor de 6 años hace | 1

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Respondida
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...

más de 6 años hace | 0

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Respondida
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...

más de 6 años hace | 4

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Respondida
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(...

más de 6 años hace | 0

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Respondida
Any way to use British spellings for function calls and arguments?
https://blogs.mathworks.com/loren/2016/04/01/the-queens-matlab/ I took this seriously at first and was appalled! Not because I...

más de 6 años hace | 2

Respondida
Matlab data classes advantages
https://uk.mathworks.com/help/matlab/matlab_prog/fundamental-matlab-classes.html In basic terms obviously floating point (doubl...

más de 6 años hace | 0

Respondida
How to concatenate 2 cell arrays containing strings?
vertcat( x{:} )

más de 6 años hace | 0

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Respondida
Why do I need to declare a variable inside a nested 'for' loop?
You are referring to it on the right-hand side of the equation as well as on the left. First time round it does not exist yet s...

más de 6 años hace | 1

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Respondida
signal processing (segmentation in time domain)
sig1 = sig( t >= 0.34 && t <= 4 ); sig2 = sig( t >= 6 && t <= 8.5 ); If you also need the t vector then apply it similarly. J...

más de 6 años hace | 0

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Respondida
finding inverse exponential value
If i and j are pixel values then you must have an image to which they are applied, e.g. im, in which case simply exp( -im(i,j) ...

más de 6 años hace | 0

Respondida
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...

más de 6 años hace | 1

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Respondida
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...

más de 6 años hace | 0

Respondida
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...

más de 6 años hace | 1

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Respondida
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...

más de 6 años hace | 0

Respondida
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...

más de 6 años hace | 0

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

más de 6 años hace | 1

Respondida
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 ...

más de 6 años hace | 0

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

más de 6 años hace | 0

Respondida
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...

más de 6 años hace | 1

Respondida
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 );...

más de 6 años hace | 0

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

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