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Robert U


179 total contributions since 2016

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Answered
Eliminate algebraic loop without using memory block
Hi Boru Wang, there is an article about "Remove Algebraic Loops" in the Matlab documentation: https://de.mathworks.com/help/sim...

6 days ago | 0

Answered
How to filter a signal?
Hi Bandw W, if you would like to simulate the output you can use lsim(): %% filter signal % create system myFilter = tf(num1...

7 days ago | 0

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Find the minimum of a function and use it to plot a graph.
Hi JACINTA ONWUKA, I do not know what you expect as output. The graph you are trying to plot is produced with every iteration. ...

1 month ago | 0

Answered
How to get different colours for different regions for this problem
Hi pallav pal, one example patch as requested. All others can be drawn accordingly. x1=0:.00001:1; x2=0:.00001:.334; y1=x1...

2 months ago | 0

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Answered
How to implement an adder without using adder block in Simulink
Hello Gowtham Gowda, my suggestion would be to use the implementation of a full adder which performs bitwise logical operations...

3 months ago | 0

Answered
Weird answer for function when dividing two fractions
Hi Katy Soto, type the following to command line to prevent Matlab from shortening output: format long g Then output of your ...

5 months ago | 0

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Answered
Adjust the phase offset when using data from 'bode'
Hi Romain Liechti, if you want - as you write - stick to the bode output you should correct the phase by a reference phase shif...

5 months ago | 0

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Answered
Adjust the phase offset when using data from 'bode'
Hi Romain Liechti, in order to customize the frequency response plot you could use bodeplot() instead of bode(). There, you can...

5 months ago | 0

Answered
How to use the Levenberg-Marquardt algorithm to fitting data and get the first derivative?
Hi Nelson Saraiva, The Levenberg-Marquardt algorithm is already ready-to-use implemented into optimization toolbox: https://de....

6 months ago | 0

Answered
How do I analyze the response of a curve as it passes through a filter?
Hi Karthik Mahesh, have a look into function lsim(). This function provides response of linear systems in time domain. Kind re...

7 months ago | 0

Answered
Shade area under curve between two x values
Hi pvtstaticvoid: You may define different intervals with area()-function. Using hold you can plot into the same axes as the fu...

7 months ago | 1

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Answered
Systems Transfer Functions (tf.m)
Hi Andrew Kay, here is an example to show you one possible workflow to tackle the described task: % create transfer function w...

7 months ago | 1

Answered
Why properties of class is not initialized ?
Hi Hafiz Luqman The class definition you posted is errornous. The property "H_laser_" is not defined. So the constructor return...

9 months ago | 1

Answered
How to fprintf directory name?
Hi Alon Rozen, There are some syntax issues in your example: Dir_Name = uigetdir; Log_File = fopen('My_Log_File.txt','a');...

9 months ago | 1

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Answered
How can I implement this algorithm in matlab?
Hi Mark N There are some issues with the your matlab syntax. function [v,x] = semi_implicit(k,m,dt,T,x0,v0) % check input...

9 months ago | 1

Answered
Pre-amplification, filtering and amplification
Hello Ricardo Whitaker: I assume the CH1 signal is a vector of doubles. * The desired filter causes errors since frequenc...

9 months ago | 0

Answered
How to import text file and sort it into arrays
Hi Behzad Parvin, please have a look if this piece of code serves your needs: fileID = fopen('SE Sample.txt'); PlainT...

10 months ago | 0

Answered
Unable to close GUI figures
Hi Valerie Cayol, I had a similar problem while closing figures. I started to use the _pause()_-command after _close()_-comma...

11 months ago | 0

Answered
Spliting Cell Into Multiple Columns
Hello Quang Phung, for your data "Primary_Chain" you could use the following code fragment in order to * seperate the colu...

12 months ago | 0

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Answered
How to find a particular string in a stuct which has multiple fields?
Hi Kish1794, you can write a function that utilizes strfind on the structure array: *main.m* %% Create TestData ...

12 months ago | 0

Answered
Plot resolution and size
Hello Adam Cervenka, since Matlab is saving figures according to "PaperPosition", "PaperPositionMode" and "resolution", these...

12 months ago | 0

Answered
How to move the position of a block name to the top through matlab command?
Hello Suzuki Kota, There indeed is a command to perform that name plate alternation: % Name plate bottom set_param(bloc...

1 year ago | 0

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Answered
how to change the scale of an colour bar?
Hi Puspa patra, I <http://lmgtfy.com/?q=matlab+color+bar+log+scale google'd> it for you and found: * <https://de.mathworks...

1 year ago | 0

Answered
How do I save an matrix with a string name and save it?
Hi Ivy Chen, dynamic variable names are not a recommended way to go. One way would be to use something like that: OUT....

1 year ago | 0

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Answered
Why does the box outline not appear on top of figure?
Hi Linnea Franssen, your code example cannot be executed. Nevertheless, did you try to add: set(gca,'Box','on'); Kind ...

1 year ago | 2

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Answered
lsim closed controlled loop confusion
Hi Daniel Grebler, In order to simulate the time response of your controlled system you need to define the system ( |sys_cl|)...

1 year ago | 0

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Answered
I need to put data from columns in different cells into one vector
Hi Martin Pecha, assuming your cells contain arrays of double: % Create input cell array cInput = cell(1,20); cInput ...

1 year ago | 0

Answered
The location of label of data cursor
Hi Victor Lam: you might want to have a look here: <http://undocumentedmatlab.com/blog/controlling-plot-data-tips> Positio...

1 year ago | 0

Answered
How to tune a PID Controller for a plant with two integrators?
Hi Aneesh Rao, PID controller tuning is a field many people worked on already. Have a look here for references: * <https:/...

1 year ago | 0

Answered
Levenberg Marquardt Curve Fitting Algorithm
Hi Jonathan Trueblood, Levenberg-Marquardt-Algorithm is built-in into <https://de.mathworks.com/help/optim/ug/lsqcurvefit.htm...

1 year ago | 0

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