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Jonas


Last seen: Today |  2020 以来アクティブ

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

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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...

2日 前 | 0

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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 ...

5日 前 | 1

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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) ...

15日 前 | 1

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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)

21日 前 | 0

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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

24日 前 | 1

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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]; ...

24日 前 | 0

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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) [~,...

25日 前 | 0

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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)...

25日 前 | 1

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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...

30日 前 | 0

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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],[...

30日 前 | 0

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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 ...

30日 前 | 0

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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...

30日 前 | 0

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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...

30日 前 | 0

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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...

約1ヶ月 前 | 0

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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...

約1ヶ月 前 | 0

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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 ...

約1ヶ月 前 | 0

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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...

約1ヶ月 前 | 0

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

約1ヶ月 前 | 1

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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...

約1ヶ月 前 | 0

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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}(...

約1ヶ月 前 | 0

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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,...

約1ヶ月 前 | 0

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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 ...

約1ヶ月 前 | 0

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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...

約1ヶ月 前 | 0

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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=...

約1ヶ月 前 | 0

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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 ...

約1ヶ月 前 | 0

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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...

約1ヶ月 前 | 1

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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 ...

約1ヶ月 前 | 0

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

約1ヶ月 前 | 1

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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...

約1ヶ月 前 | 0

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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...

約1ヶ月 前 | 0

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