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# Voss

Last seen: Today Active since 2013

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How to define the location/position of a number in a specific cell array?
idx = find(cellfun(@(x)isequal(x,1),MY));

18 hours ago | 0

data extract from array or vector
data = rand(96,1); % 96-by-1 column vector for ii = 1:12 subset = data(ii:12:end); % do something with su...

1 day ago | 1

Variables in for loop not updating in following iterations
The loop has only one iteration because N is a scalar for x=N To loop N times, you can use for x=1:N

1 day ago | 0

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is there any one line code for writing in this way? if it's please give me a way to write this.
T = [0 0.0018 0 0.0012; 0.0018 0 0.0025 0; 0 0.0025 0 0.0015; 0.0012 0 0.0015 0]

3 days ago | 0

The error I get is "Unrecognized function or variable 'C12_22'." The cause of the error is that "C12_22" has been misspelled ...

5 days ago | 0

Exceeds the number of array elements (0).
Either img or bounds (or both) is empty. Check img and bounds and figure out why one or both is not what you expect.

5 days ago | 0

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Warning message when creating surface plot.
You probably mean to use element-wise multiplication and division, in order to get a matrix Z the same size as X and Y: Z =...

7 days ago | 0

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a = b<0
a = b<0; checks if b is less than 0 and stores the result in a. If b is a scalar: if b is less than 0, then a will be true; ot...

7 days ago | 2

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Sprintf warning message on a function file
The warning is saying that, if all you do with the result from sprintf is to display it with disp, then you can display it with ...

7 days ago | 1

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How to iterate a structure name and save directory in a for loop?
saveDir = 'my/path/name'; cnt = 50; for j=1:10 cnt = cnt+50; S = struct('minTime',tmin,'maxTime',tmax); ...

7 days ago | 1

How to find out how many participants are in each group of my combined matrix (31230x5)
% some data like yours with participant IDs in column 1 % and group ID in column 2: data = [randi(40,31230,1) randi(8,31230,1...

8 days ago | 0

Plot clear using MATLAB app designer.
cla(app.UIAxes, 'reset') https://www.mathworks.com/help/matlab/ref/cla.html

9 days ago | 1

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Next value in alphabet
nextLetter('d') nextLetter('s') nextLetter('z') % no next letter after 'z' -> error function next = nextLetter(letter) Alp...

10 days ago | 0

Hiding exponent labels without scientific notation
Set the xticklabels when you set the xticks.

11 days ago | 0

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how to plot two graphs using a matlab?
semilog should be semilogx, and holf should be hold % semilog(x1, wattdis) %% I cannot plot this one. semilogx(x1, wattdis) ...

12 days ago | 0

How to extract number of matrices with all elements zero and the indexes of those matrices in a struct
% making up some data like yours: gridcell_meancov = struct('grid',struct('mean',num2cell(rand(12,6)),'cov',squeeze(num2cell(ra...

13 days ago | 0

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How to split dataset into 2/3 for training and 1/3 for testing include plot the graph?
This: Ptest=idx(round(PD*N)+1:end,:);Ttest=idx(round(PD*N)+1:end,:) should be this: Ptest=idx(round(PD*N)+1:end);...

14 days ago | 0

How to Plot an Exponential Process given equation
t= 0:0.1:10; %This is the interval I need concentration= 1.* exp(-1.*t); %This is the equation C(t)= C0* e^-kt plot(t,conce...

14 days ago | 0

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Array indices must be positive integers or logical values
You probably mean B.*(L - x) instead of B(L-x) in two places.

14 days ago | 0

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How do I plot multiple vectors in a graph
Like this? A = 1:6; B = 1:6; [Ap,Bp] = ndgrid(A,B); plot(Ap,Bp)

14 days ago | 0

Getting Error while using Transparency to object (alpha)
You have a variable called "alpha" in your workspace, which is preventing you from running the "alpha" function. You should rem...

15 days ago | 0

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Can someone find why I get the error: Index in position 2 exceeds array bounds. Index must not exceed 1.
1. Consider the following. Start with x_new as you have it initially: X= [46,52,55,71,32,5,6,11,14;47,56,47,58,59,66,70,72,71];...

16 days ago | 1

Array indexing in matlab
z = reshape(1:30,6,5).' % [] not necessary; 1:1:30 is the same as 1:30; .' is transpose, ' is complex conjugate transpose [z([1...

16 days ago | 1

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Unable to find file , load file to xl file .
Two things: 1) You're using y1 = xlsread('F:\matlab\bin_my_excel_file'); % ^ underscore but 'bin' i...

16 days ago | 0

how do I change the position where a gabor patch is displayed (Psychtoolbox)?
According to the documentation: http://psychtoolbox.org/docs/Screen-DrawTextures you can specify the location(s) to draw to as...

16 days ago | 0

How to collect and show answers captured by using key press function (keypressfnc)?
The main problem here is that the KeyPressFcn is executed every time the user hits a key while the figure has focus. That is, Ke...

16 days ago | 0

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How can I mark the vertex of a hexahedron with dots?
Use the 'Marker' (and possibly 'MarkerSize', 'MarkerFaceColor', 'MarkerEdgeColor') properties. <https://www.mathworks.com/hel...

16 days ago | 0

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