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Alexander


Retiree

Last seen: 4 days ago Active since 2022

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Programming Languages:
C
Spoken Languages:
German
Pronouns:
He/him

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  • 6 Month Streak
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  • Knowledgeable Level 2
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Answered
How to find delay of signal sample
Maybe this would be helpful: https://www.mathworks.com/matlabcentral/answers/2107496-how-to-find-delay-of-signal-sample @Manik...

5 days ago | 0

Answered
Reading multiple .txt files and plotting a graph
My ancient approach: clear; fid = fopen('S1.txt','r'); fgetl(fid);fgetl(fid); Titel = fgetl(fid) for(ii=1:44) dyTxt = ...

6 days ago | 1

Answered
How can I change the decimal separator when exporting to Excel?
Excel uses the operating system defaults. To change this open a file in Excel and click on the windows butten (top left). Go to ...

19 days ago | 0

Answered
How to use an output from on file as input in another file.
Do you mean something like this: function [S,V]=enzymeLeastSquares(r,g); S=sum(r,8) V=sum(g,8) and the calling function migh...

22 days ago | 1

Answered
Cutting (dividing) a matrix into a specific number of rows.
Just another approach. Simple but it might be helpful. I assume in the first half of your matrix are x or t, in the second half ...

25 days ago | 1

Answered
Can I smoothen the cdfplot() result?
@Mathieu NOE, thank you for remaindig me. This question kept nagging me, but I just forgotten it. Here are some rudimentary apro...

27 days ago | 1

| accepted

Answered
how to open excel files and write data?
Just use "xlswrite(FILE,ARRAY,SHEET,RANGE)" in your loop four times with the appropriate file and sheet name. Of cause you have ...

28 days ago | 0

Answered
Loop for Concatenating files *.CSV
I'm really not sure if I understood you correctly, but this might be what you want: load Folder for ii = 1:10 dy = iwant{...

1 month ago | 0

Answered
how to enter exponential multiplication with a time dependent array
Do you mean something like that: t=0:0.06:3; fa=10*exp(-5*t) plot(t,fa)

1 month ago | 0

Answered
Plot Piecewise function graph
You should change axis([-4\pi 4\pi -4 4]); to axis([-4*pi 4*pi -4 4]); in the first step. Than you can see your complete f...

1 month ago | 0

Answered
Graphing the sine graph
t = linspace(0,2*pi,1000); y = sin(t).^2; plot(t,y);

2 months ago | 0

| accepted

Answered
How to plot polynomial in matlab
Some homework assistance and solution: x = linspace(0,0.8,1000); y = 150*x - 400*x.^2 + 500*x.^3; plot(x,y)

2 months ago | 0

Answered
How to find transfer function to a second order ODE having a constant term?
Are you looking for something like this: AnregeAmpl = 1; % mm fmax = 20; % Hz f=0.1:0.1:fmax; ...

2 months ago | 0

Answered
normalize(A,"range") function throwing error of "Too many input arguments." in Matlab 2023a.
Move "Q:\matlab-toolbox\geom2d" with pathtool to the bottom and save. If it is in your startup file apply -end like this: addpa...

2 months ago | 0

Answered
Need to fit a curve to some data points
Seems to be an exponetial behavior. Use lsqcurvefit to approximate a curve according your needs. My code: dXdata = [1 2 100] d...

2 months ago | 0

Answered
Using continous time in Matlab editor
Maybe something simple like that: V1 = 18; % Input voltage R = 7.2; ...

2 months ago | 0

Answered
How to find zeros of a function?
If it's not a function but meassured data I would go like this in a first try: x = -3.55:0.0001:3.55; % assuming 10 kHz sample ...

2 months ago | 0

Answered
Arduino MATLAB sin function loss of resolution with data
You should define a sample rate in your program, e.g.: const unsigned long AbtastRate = 60000; // 60000 entspricht einer Minute...

2 months ago | 0

Answered
How to find out the amplitude and duration of a sine wave of different amplitudes?
Here is another approach as promissed above: clear;clf;commandwindow; fs=1000; % sampling rate [Hz] ts=1/fs;...

2 months ago | 0

Answered
How to find out the amplitude and duration of a sine wave of different amplitudes?
Very easy approach with "movmax": clear;clf; fs=1000; % sampling rate [Hz] ts=1/fs; % sampl...

2 months ago | 0

Answered
how to use the hanning window to smooth the photon signal
I can't see this effect you mentioned. smooth_data remains the same size as data (I assume data = Photoncounts1). What do you ex...

2 months ago | 0

Answered
How can I convert indices into a binary matrix?
Maybe something like the following? fid = fopen('Item.txt'); A = []; while(~feof(fid)) syLine = fgetl(fid); dyA = z...

2 months ago | 1

Answered
How Do I Have my Program Accept a Negative Year as Valid
datetime(-1,1,1) answeres 01-Jan--0001 which is correct.

2 months ago | 0

Answered
Algorythm for Average of excel data
A very easy approach (as allways): %Algorythm for Average of excel data %https://de.mathworks.com/matlabcentral/answers/208248...

2 months ago | 0

Answered
Import CSV from nth row. n is variable across files
I think (the specialists here might correct me) you don't get a ready to use function, that solves your problem. Here a suggesti...

2 months ago | 0

Answered
How to convert 30s daily data into hourly data using MATLAB?
Hi Aiswarya, I also can only assume your intention. My solution would be: clear data = dlmread('sample_hourly_shlg_testdata_E...

4 months ago | 0

Question


In between the years, a PISA question (nothing essential): The last digit of 7^190
Last digit of 7^190, I thought a simple question if you have Matlab. But fprintf('%f\n',7.0^190.0) reports 4 as last digit, bu...

4 months ago | 1 answer | 0

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answer

Answered
Create 30 minute bins by reading time stamps
Whers is this file Data.xlsx from? I think someone has corrupted the "Calculated time" column. In this column is a mixture of fo...

4 months ago | 0

Answered
How to get a plot out of a .csv data from a sensor?
My old-fashioned solution, not "fine arts", but works. clear; close all; Lines = char(zeros(30000,40)); % Could be any number ...

4 months ago | 1

Answered
Convert a datetime to string
Use mm instead of MM. checkdate = datestr(datelist{1,d},'yyyy_mm_dd') should do the work. As I have not your datelist,...

5 months ago | 0

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