# Jonas

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**Programming Languages:**

C++, Java, MATLAB

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English, French, German

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**Feeds**

drawrectangle not working consistently, help!

is this still an issue? I remember having also problems with that, but at the moment, I cannot replicate the problem in 2022a f...

ongeveer een maand ago | 0

Question

Why is exportgraphics not fully supported in Matlab for Desktop?

I saw that the exportgraphics function can now handle inputs concerning width and height. Unfortunately, this is only the case f...

ongeveer een maand ago | 1 answer | 0

### 1

answerI am getting wrong results for the Continuous wavelet transform (CWT) on converting the frequency axis (Y Axis) from log scale to linear scale for the same frequency limits.

you could interpolate the image pixels, but this makes the upper frequency values barely visible fs = 10000; % Sampling freque...

ongeveer 2 maanden ago | 0

How can I do a linebreak in the categories?

yes you could "hack" it using a tabular in latex. just use "\\" as line break, like you know it from the line endings from the t...

ongeveer 2 maanden ago | 1

| accepted

Extracting data from struct as matrix

as you already said, you canot concatenate the data as matrix, since it has different size. you could use a cell array, but this...

5 maanden ago | 1

Question

How to create a suitable statistical test for my repeated measures problem with unequal sample sizes?

dear community, i have the following problem: I want to test differences of specific repeated measures during a pre and a post ...

5 maanden ago | 1 answer | 0

### 1

answerQuestion

Why does the tiledlayout keep the whitespace between tiles although TileSpacing is 'tight'

dear community, i have a tiledlayout with TileSpacing set to 'tight', but the upper row keeps space below it, altough there is ...

6 maanden ago | 1 answer | 0

### 1

answerSubmitted

copyFromTilesToTiles

copies from one tiledlayout to another tiledlayout

6 maanden ago | 1 download |

How to plot this in MATLAB?

this could work theta = linspace (-pi/4,pi/4); x = 0.5*cos(theta).*sqrt(2.*cos(2.*theta)); y = 0.5*sin(theta).*sqrt(2.*cos(2....

7 maanden ago | 1

| accepted

How do I count the number of times my graph crosses two separate lines?

maybe too caomplicated, but this can work: data=[1:10 9:-1:1 2:10 9:-1:1 2:10]; % row vector to not get problems with num2str...

7 maanden ago | 0

Running excel VBA script via Matlab yields different chart position

this seemed to be an issue maybe related to the graphics card(s) or the excel application itself. The workaround for me was to s...

8 maanden ago | 0

| accepted

How to calculate the angle between two 3D vectors?

look here: https://de.mathworks.com/matlabcentral/answers/328240-calculate-the-3d-angle-between-two-vectors P1=[78,47,88]-[128...

8 maanden ago | 0

Reference to non-existent field 'folder'.

if there are no .nc files in the current directory, then files = dir('*.nc'); will be empty, and as consequence files(k) wi...

8 maanden ago | 0

How to have smithPlot with outer area with white colour?

weird function. i never used it before. but setting the Figure color before plotting with the smithplot seems to use the backgro...

9 maanden ago | 2

| accepted

How to get a set aspect ratio of 4:3 on a figure?

you could use pbaspect on each subplot figure; ax1=subplot(2,1,1); plot(rand(10,1)); ax2=subplot(2,1,2); plot(rand(100,1));...

9 maanden ago | 0

How to normalize a signal for each half cycle?

you could normalize by using a moving max window with size a bit bigger than half of one cycle: f=10; fs=100; t=0:1/fs:2;...

9 maanden ago | 0

How do I make it so my Plot keeps the same colours

for me this looks like an error that has nothing to do with the disableDefaultInteraction using % plot(app.LiveAxes, app.T...

9 maanden ago | 1

| accepted

Minimale en maximale data uit de matrix filteren

what about something like that: mat=[7 8 9 10 11 12 13; 1 2 4 5 8 2 12; 3 6 10 15 1 6 8]; colsToEdit=[1 3 7]; ...

9 maanden ago | 0

Question

Running excel VBA script via Matlab yields different chart position

dear community, I am trying to run a VBA script in excel using Matlab. Running in Excel, the created chart is positioned 2 colu...

9 maanden ago | 1 answer | 0

### 1

answerProblems in recognising text with OCR from clear logical array

i guess it is just a mishandling of the automatic mode recognition: I=imread('testOCR.png'); I=rgb2gray(I); imshow(I); c=ocr...

9 maanden ago | 0

| accepted

paralelise nested for loop with skipped indexes

Yes, there is a more efficient way to do this by utilizing a combination of vectorized operations and sparse matrix creation tec...

10 maanden ago | 0

Question

Do I have to correct correlation values for two series originating from overlapped analysis?

Dear community, I want to have a look into the correlation of two parameters. Since those parameters originate from an overlapp...

10 maanden ago | 2 answers | 0

### 2

answersHow to access App version number from inside the App

hi Steven, do you have powershell available (are you on windows)? then have a try with the attached m file and the prj file fo...

12 maanden ago | 0

| accepted

Question

how to use ranova with repeated repeated measurements

dear community, I have an experiment where 12 subjects were measured during 2 tasks and during each task, a certain value was m...

meer dan een jaar ago | 0 answers | 0

### 0

answersQuestion

uicontrol does not allow 'remove' as String during component creation

Dear community, are there reserved keywords for the text-style uicontrol? I could not find a list for that but I noticed that I...

meer dan een jaar ago | 1 answer | 0

### 1

answerPeriod Length of the random numbers generated by rand() and randn()

don't confuse yourself, random number do not have a period length, but what you actually mean may be the rate e.g. after which a...

meer dan een jaar ago | 1

Question

Plot position in uiaxes not precise?

Dear community, - Edit below - I tried to plot a cross on an image placed into a uiaxes in a uifigure and i noticed, that the ...

meer dan een jaar ago | 0 answers | 0

### 0

answershow to: multiple choises in if-function

looks good, but you could increase readability e.g. by using the ismember function alphabet = ["A" "B" "C" "D" "E" "F" "G" "H" ...

meer dan een jaar ago | 2

How to make a Subplots using set(gca,'position') command?

you could create the axes by yourself and set the positioning as you did figure('Color',[0.9 0.9 0.9]); % create figure and use...

meer dan een jaar ago | 0

| accepted

Submitted

partially logarithmic plots

This function allows to plot with x or y axis divided into a logarithmic and linear part.

meer dan een jaar ago | 2 downloads |