Adam
1.882 total contributions since 2014
Professional Interests: Signal Processing, OOP, Matlab GUI programming, Machine Learning
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Awarded to Adam on 12 Jul 2014
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 dagen ago | 1
| accepted
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...
5 dagen ago | 1
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...
10 dagen 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...
20 dagen ago | 2 answers | 0
2
answers(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...
25 dagen ago | 0
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...
26 dagen ago | 0
Detecting change in sign of values of a column
NewC = find( diff( sign( Data(:,2) ) ) ) + 1;
27 dagen ago | 1
| accepted
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...
ongeveer een maand ago | 0
| accepted
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...
ongeveer een maand ago | 1
| accepted
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(...
ongeveer een maand ago | 0
| accepted
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...
ongeveer 2 maanden ago | 2
Matlab data classes advantages
https://uk.mathworks.com/help/matlab/matlab_prog/fundamental-matlab-classes.html In basic terms obviously floating point (doubl...
ongeveer 2 maanden ago | 0
How to concatenate 2 cell arrays containing strings?
vertcat( x{:} )
ongeveer 2 maanden ago | 0
| accepted
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...
ongeveer 2 maanden ago | 1
| accepted
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...
ongeveer 2 maanden ago | 0
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) ...
ongeveer 2 maanden ago | 0
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...
ongeveer 2 maanden ago | 1
| accepted
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...
ongeveer 2 maanden ago | 0
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...
ongeveer 2 maanden ago | 1
| accepted
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...
ongeveer 2 maanden ago | 0
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...
ongeveer 2 maanden ago | 0
replace duplicate value by 0 in matrix or vector
[C,ia] = unique( b ); b( setdiff( 1:numel(b), ia ) ) = 0;
ongeveer 2 maanden ago | 1
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 ...
ongeveer 2 maanden ago | 0
disp function error in matlab coder
disp is not supported by Coder. sprintf should work though.
ongeveer 2 maanden ago | 0
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...
ongeveer 2 maanden ago | 0
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 );...
2 maanden ago | 0
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extract logical locations that match array
B .* A would seem to give what you want
2 maanden ago | 0
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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...
2 maanden ago | 0
| accepted
Convert Z dimension to X dimension
myArray(:) will do for that kind of reshape, where myArray is obviously the array you start with.
2 maanden ago | 0
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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...
2 maanden ago | 0
| accepted
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