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Jonas


Last seen: Today Active since 2020

Programming Languages:
C++, Java, MATLAB
Spoken Languages:
English, French, German

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Answered
FFT on Image Time Series
if the object of your camera is more or less static and illuminated with a temporally modulated light source and you are intere...

8 days ago | 0

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Answered
Issue with reading text value from a cell in MS Excel using readmatrix
if i am not mistaken, readmatrix expects numbers for each entry, so the numbers can be but into a matrix. if your data contains ...

10 days ago | 1

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Answered
Matlab keeps giving me error for invalid syntax! I don't understand why
looks like you are missing a comma if d>0 fprintf('Le soluzioni distinte sono %12.2f \n',A1 , A2) ...

20 days ago | 1

Answered
Store one vector range inside another
put the : range expression in the braces to select a range if a vector: vec=1:10 part=vec(5:8)

26 days ago | 0

Answered
Changing pixel colors of .JPG image produces weird colors
dont forget to set all 3 channels of the rgb image to 0 by using e.g. app.newImage(:, round(col),:) = 0

29 days ago | 1

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Answered
Plot figure for certain elements of readtable output
you can use directly index the variables of the table: tbl=table(); tbl.long=[1 2 3 4 4 4]; tbl.lat=[34 56 57 72 44 124]; ...

29 days ago | 0

Answered
delete row in matrix if value in another matrix is unique
you want to delete entries when the number is repeated first? firstVec=[5 3 5 1 7 9 3 1 4]; secVector=1:numel(firstVec) [~,...

1 month ago | 0

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Answered
Extracting only some cell arrays from a cell- based on a double array
something like this: yourCell=cellstr(num2str((1:29)'))' someOfThemIdx=[ 1 3 15 19 20 29]; someOfThem=yourCell(someOfThemIdx)...

1 month ago | 1

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Answered
Return values from uifigure by pressing OK button
if you nest functions in functions, you can directly use the defined variables. note also the uiwait to wait for the functio nre...

1 month ago | 0

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Answered
How do I create a graph similar to that of the example below?
you could do like this loglog([ 10^2 10^2 10^4 10^4 10^2],[ 10^4 10^6 10^6 10^4 10^4]); hold on; loglog([ 1 10^2 10^4 10^4],[...

1 month ago | 0

Answered
How to create image from arrays by random themself ?
a = [119 79 76 101 119 99 72 77 94 82 76 84 92 86 63 54 45 47 59 69 56 59 52 48 48 41 41 38 41 42 38 42 36 30 35 17 23 29 29 31 ...

1 month ago | 0

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Answered
How to find column where 0 turns to 1 for each row
yourMat=[0 0 0 0 0; 0 1 1 0 0; 0 0 0 1 0]; where=arrayfun(@(idx)find(diff(yourMat(idx,:))==1,1,'first')+1,1:size(your...

1 month ago | 0

Answered
Printing figure alters content details
couldn't find a professional solution for this, but here is a ugly one by including the colormap as pixel values. imwrite should...

1 month ago | 0

Answered
using multiple else if
the reason the variables are not recognized is, that the depending on your if clause, another variable is created (the created v...

1 month ago | 0

Answered
Warning: Unable to play audio because no audio outputs were found.
anything new on this topic? can't make matlab to play sounds again, there are audio devices available, resetting/rehashing has n...

1 month ago | 0

Answered
how to return cell array with varargout?
if i understand you cirrectly, you want as dynamic output variable varargout, and each of the given should/can be a cell itself ...

1 month ago | 0

Answered
How to make an image appear in different locations
you can try this raw code, how often the image can change the position is defined in the function close all; clear all; im=im...

1 month ago | 0

Answered
How to extend sendmail wrapping
type edit sendmail and look into function toSend = formatText(msgText) there you can find the line maxLineLength = 75; wh...

1 month ago | 1

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Answered
Default interactions during buttondownfcn for geoaxes ???
yes, the defaultInteraction is disabled when you set a window function like the buttondwnfcn. However, it is reenabled if the ca...

1 month ago | 0

Answered
Operator '-' is not supported for operands of type 'table'
try e.g. (Quat{i}{2:end,:} - Quat{i}{1:end-1,:})./(Time{i}{2:end}-Time{i}{1:end-1})'; instead of (Quat{i}(2:end,:) - Quat{i}(...

1 month ago | 0

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Answered
create a sparse multidimensional matrix
you can try this: myData=[1 2 3 4; 5 6 7 8; 9 10 11 12]; % get sizes dataChunkLength=size(myData,...

1 month ago | 0

Answered
My code is keep plotting the wrong data
may the scatter3() command is suffiecient to visualize your data, you interpolate (e.g. interp3) your XYZ data to generate more ...

1 month ago | 0

Answered
Step-by-step calculation of rectangular window
or you use the movsum function fs=10000; t=0:1/fs:3; tau=0.25; tauInSamp=tau*fs; spikeTimes= randi(numel(t),10,1); % generat...

1 month ago | 0

Answered
Step-by-step calculation of rectangular window
i suggest you just add the rectangular window at the specified times given by the spices and the spice amplitude: fs=10000; t=...

1 month ago | 0

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Answered
how to concatenate two tables efficiently
before concatenation you can go trough all tables and add up the number of rows. Then preallocate the table using three columns ...

1 month ago | 0

Answered
let a script run in other script with variable parameters
it really sounds like you actally should change your script to a fcuntion. Running a script giving paramters to it is exactly wh...

2 months ago | 1

Answered
How to print value from Structure in MATLAB
you can access the 4 doubles in the cell StagPRFValue by e.g. CombineOutput(1).ValueStructure.StagPRFValue{1} the other two ...

2 months ago | 0

Answered
Interpolating points in a 3D space with one line
have a look into the polyfitn() function on FEX

2 months ago | 1

Answered
Call a function within an if statement
try randomtasks(n)==1 i guess without the (n) you would compare a vector to a value e.g. [1 3 2]==1 which is not true and th...

2 months ago | 0

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Answered
need help for understanding audio compression code using dct
it shows, how a sound could sound if you transmit only 128 dct values per block instead of 512 sound values per block % read au...

2 months ago | 0

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