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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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Question


How to ensure, that an MATLAB executable can communicate with NI Data Acquisition Cards
Dear community, I want to create a small Matlab GUI which can handle NI DAQ devices. Later, I want to compile my application to...

ongeveer 13 uur ago | 0 answers | 0

0

answers

Answered
How to interpolate a set of data wher the X size is different for the Y size
you can usw meshgrid to prepare your xq and yq: Y=9:13;X=1:2:5;Z=rand(5,3); [xq,yq]=meshgrid(1:0.5:5,9:0.5:13); inter...

11 dagen ago | 0

Answered
Find number in vector
find(A>3,1)

11 dagen ago | 1

| accepted

Question


Reading uint8 from raw data takes much more RAM then expected
I am trying to read some MB of data from big files of several GB. I am using the follwing code: fid=fopen(filename,'r'); fseek...

15 dagen ago | 1 answer | 0

1

answer

Answered
Help in 2D plot of coefficients
why not use normal plot command? RealCoefficient= [0.0723, -11.0000, 0.001, 0.0011, 0.0012, 0.0013, 0.0014, 0.0015, 0.0016, 0.0...

22 dagen ago | 0

| accepted

Question


audioDeviceReader: error when choosing ASIO driver for input mic
Dear community, I have an error when I want to choose the Device for the audio device reader interactively. Altough the String ...

22 dagen ago | 0 answers | 0

0

answers

Answered
open software and run script via command line
without looking into the detail, you have to chain commands in the system commands using a & sign also: use the output argument...

ongeveer een maand ago | 1

Answered
How to put subscript in uilabel text and can I specify location on same line?
for subscript, use other text interpreters, e.g. tex uilabel("Text","K_a","HorizontalAlignment","center",'Interpreter','tex'); ...

ongeveer een maand ago | 1

| accepted

Answered
Smoothing curve plot with some data points
x = [-27.59;-32.36;-32.36;-24.99;-25.12;-32.62;-37.62;-42.62;-37.62;-37.62;-40.11;-40.11;-37.61;-33.36;-29.11;-27.11;-25.11;-20....

ongeveer een maand ago | 0

| accepted

Answered
Is it possible to use vertcat with dot notation?
if you just want to have all file names available, you could use { } e.g. in a cell array {filename.name} if you do not need ...

ongeveer 2 maanden ago | 1

Answered
Action on close of spectrumAnalyzer() object/windows
alright, I now got it. we can close and open the scope Window using show(scope) and hide(scope) und we can check if the scope wi...

ongeveer 2 maanden ago | 0

| accepted

Answered
Action on close of spectrumAnalyzer() object/windows
my insight so far: I have seen, that a new Process is created, and the Window Name has the title "Spectrum Analyzer". we could ...

ongeveer 2 maanden ago | 0

Answered
How to plot two .fig file as subplots in a new figure window ?
here a kind of manual solution, adapted from the function given on file exchange: h(1) = openfig('fog.fig','invisible'); ax(1)...

ongeveer 2 maanden ago | 0

| accepted

Answered
matrix per minute in plot per hour
you mean something like that? or do you want another format? plot((1:96)/4,rand(96,1)); xticks(0:3:24) xlim([0 24]); xlabel(...

ongeveer 2 maanden ago | 0

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Answered
How to save a high resolution image in MTALB?
exportgraphics() is available since 2020a which release are you using?

ongeveer 2 maanden ago | 0

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Answered
How do I make a specific range of numbers and increment?
use colon operator T=100:50:500

ongeveer 2 maanden ago | 0

Answered
Buffer around a value in a matrix.
A=[ 0 0 0 0 1 0 0 1 1 0 0 0 0 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 0 1 0 0 0 1 1 0 0]; B=imfilter(A,ones(3...

ongeveer 2 maanden ago | 0

| accepted

Answered
efficient way of importing excel sheet
if you activate MultiSelect in uigetfile, you can select more than one file. The resulting variables are then cell arrays with t...

ongeveer 2 maanden ago | 0

Question


Action on close of spectrumAnalyzer() object/windows
Dear community, at the moment I am preparing for some real time processing on audio recordings. I want to end the inifinite rec...

ongeveer 2 maanden ago | 2 answers | 0

2

answers

Answered
How to sort a part of a given array?
just use indexing to reassign those numbers data=20:-1:1 data(1:5)=sort(data(1:5),'ascend')

ongeveer 2 maanden ago | 0

Answered
how to create different matrices?
you could split them into multiple 400x1 vectors by this data=rand(30000,1); data=reshape(data,400,1,[]); size(data) you can...

ongeveer 2 maanden ago | 1

| accepted

Answered
Summing the values with looping
you could generate all values you asked for with a single expression. if you want the sum until a specific n, use cumsum() on th...

ongeveer 2 maanden ago | 0

Answered
How can I draw contour lines with a given excel Data sheet
you mean something like that? mtx=readmatrix('F_22_Project Data.xlsx','Range','D9:V32'); contour(0:20:360,0:20:460,mtx)

ongeveer 2 maanden ago | 0

| accepted

Answered
i want to know the fitness
i guess you are seraching for the correlation of X and Y coordinates see corr() and corrplot()

2 maanden ago | 0

Answered
How do I plot grid points in a wedge-shaped volume?
you could add the third dimension like that: x=-6:6; [X,Y,Z]=meshgrid(x); r=5; phi=pi/2; % from [0,pi] theta=pi/4; % ...

2 maanden ago | 0

Answered
MATLAB 2022b removing spaces from strings in concatenation?
"For character array inputs, strcat removes trailing ASCII whitespace characters: space, tab, vertical tab, newline, carriage re...

2 maanden ago | 1

| accepted

Answered
How can i find the Majoraxislength and Minoraxislength of each cell present in binary image ?
a call to regionprops should suffice: clear; im=imread("image.png"); im=rgb2gray(im); % to grayscale im=im~=0; % make bina...

2 maanden ago | 0

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Answered
Name points on a plot based on their order
you could add the line text(ri(:,1),ri(:,2)+0.05,cellstr(num2str((1:size(ri,1))'))) or text(ri(:,1),ri(:,2)+0.05,strsplit(num...

2 maanden ago | 0

| accepted

Answered
Traslate and Rotate a point cloud
if you have a matrix nx3, with each row being one set of point corrdinates you can translate first and rotate afterwards using s...

2 maanden ago | 0

Answered
Replacing special character 'É' to 'E'
looks like there are only manual solutions. Stackoverflow is your friend ;-) https://stackoverflow.com/a/60181033

2 maanden ago | 0

| accepted

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