Questions tagged [matlab]
Programming questions about MATLAB are off topic and should be asked on Stack Overflow. MATLAB is a high-level language and interactive programming environment developed by MathWorks. It is the foundation for a number of other tools, including Simulink and various toolboxes that extend the core capabilities.
257
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Remote desktop black screen after login?
it is a question that has been already answered but I don't find any solution in the previous answers.
I use microsoft azure and I am trying to connect with remote desktop to use matlab in cloud.
...
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777
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How to download and install MATLAB in Ubuntu with no GUI?
I am working inside a docker container, and the only interface I have is the terminal.
I used pip install matlab and it does install the version 0.1, but when I write matlab --version, the message is ...
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1
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How to add a label below polar histogram
I would like to add a text below polar histogram text.
Originally, I have a regular histogram and I can use xlabel to put a text as follows:
histogram_orientation_of_blobs = histogram(orientation, '...
1
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2
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496
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Normal distribution for a given range of numbers in Matlab
My question is about estimating a normal distribution for a row of points of an interval that are extracted from the data, just knowing the maximum (xmax = 200) and minimum (xmin = 100), to distribute ...
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Matlab exits during installation without any prompt or error hint
I was installing matlab 2021b using the online installer. At first, everything went well and it began the installation process. But at some point, when the progress bar is at 15%, 40% or so, it exits ...
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160
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Mathmatica saving Matlab files as Mathmatica as Wolfram Mathmatica Package
I have used Matlab for years and had to download Mathmatica for a class. However when I saved a Matlab file I think I accidently gave Mathmatica permission to be the defualt for .m files.I have ...
Benjamin bLACK
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160
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Want to have further segment from another pie chart
I hope the picture is self-explanatory.
I have already a pie chart I have to have a further segment in the chart but it has to keep the previous parent segment intact.
I have tried this in Excel and ...
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1
answer
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How do you use git from matlab online?
I'm using matlab from https://matlab.mathworks.com/
Is there any way to use git from there? the interface doesn't seem very enlightning. Matlab help assumes you have a local matlab installation.
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232
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How to use full 256GB RAM of my work station? MATLAB only seems to be using 75GB of RAM and not the 256GB that is available
I have a workstation that has 256GB RAM and 32 cores. However, when I am running some high-end simulations, the maximum used memory by the MATLAB is 33% (75 GB) and it never increases.
The simulations ...
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1
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160
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How can I solve the Error: 358 when activating MATLAB R2019b?
"Error 358: The license file expiration date has passed. In order to activate this license, the license file expiration date must be set to a future date."
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12
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55k
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Can I run my CPU at 100% usage for a long time?
I have a Dell XPS 15 9570, 32 GB ram, 2.2 ghz and 6 cores. When i use an application (The parsim command on MATLAB) (for more details) then my fan starts running fast , during this my PC doesn't seem ...
- 737
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1
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631
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Merge 3 .csv into one file with different number of columns
I have 3 .csv files and I want to merge them together to one .csv file which can be in R or Matlab.
The files are:
1597 obs of 167 variables;
160 obs of 167 variables;
533 obs of 146 variables
I ...
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0
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33
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Matlab refuses to compute a limit [closed]
I have some function handle which has a variable input x, along with some parameters. I am trying to compute the limit when x goes to zero from above of that function, for different values of the ...
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1
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MatLab showing different plots on different zoom level
I ran this code on MatLab:
function main
fimplicit (@(x,y)f(x,y),[2 5])
end
function fun = f(x,y)
nc=1.45; %cladding
nf=1.5;
ns=1.4; %substrate
h=5; %width of waveguide
kappa=sqrt(x^2*nf^2-y.^...
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1
answer
546
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How to get different color for different branches in a plot in MatLab, Mathematica and Desmos
I am trying to obtain slab-waveguide dispersion plot like this (dashed line):
I tried following code in Matlab:
function main
fimplicit (@(x,y)f(x,y),[0 10])
end
function fun = f(x,y)
nc=1.45; %...
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2
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1
answer
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Linking JVM languages other than Java with Matlab
I'm aware that it's possible to link Java programs with Matlab. Is it therefore possible to link any JVM languages with Matlab? I would suspect that's the case -- presumably Matlab can't tell and ...
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1
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257
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Values of Components in a Matlab app are not updated while a loop is running
I have created an app using the App Designer in Matlab. I have a check box called CheckBox and want to access its value from inside a loop, e.g. display it in the console. The way this could be done ...
- 101
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1
answer
184
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MATLAB: Growing an array and logical indexing
I create the following array in MATLAB:
Now I find which elements of x are greater than 4:
So far so good. Now I create an array of length 8:
And now I execute this command:
I am very confused as ...
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2
answers
484
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Matlab solve command gives four equations instead of 2 real solutions
I am trying to solve the following equation:x^4 - 3*x^3 + x^2 - 1 by doing: solve(x^4 - 3*x^3 + x^2 - 1 == 0) I am expecting either two real solutions or four solutions where two of them are real and ...
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1
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"gcs" returns nothing in MATLAB
After I restarted my PC and then re-opened a .m script I was working on, that for some reason broke it. gcs for some reason returns 0×0 empty char array when it's supposed to return the pathname of ...
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1
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Matlab syntax (1:end-1) - Explanation
Could someone explain me this code?
meas.jerk.time = (meas.acc.time(1:end-1) + meas.acc.time(2:end)) ./ 2;
Assuming that meas.acc.data and meas.acc.time are vectors with the same number of elements, ...
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MATLAB - Error using interp1>reshapeAndSortXandV X and V must be of the same length
I geht this error message when I try to derive my acceleration of the car. I think there is a size problem, but I don't know how to solve it.
The data is measured from a car.
meas.jerk.data = diff(...
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0
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46
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Opening MATLAB scripts by double click on linux
I associated '.m scripts with Matlab, but still, I have a problem. When I open two files of this type, I open 'two Matlabs' also. I want to have a similar result as in Windows. I open two scripts, ...
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0
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17
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MATLAB output array
I'm a beginner and I got a Script and I have to out put RES{1} and RES{2}
RES{ii,1} = measure;
RES{ii,2} = measure_filter;
measure and measure_filter will be filled before. But I don't know how to ...
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1
answer
53
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MATLAB: recall previous command and ADD it to what I typed (similar to bash)
On the MATLAB commandline, I can recall the previous command with the UP arrow. However, if I already have typed something and then hit UP arrow, only commands beginning with what I already typed will ...
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1
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27
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How to make an application "recognized" as an application
I'm using ubuntu and i3 window manager.
To launch matlab I have to navigate to
/usr/local/MATLAB/R2019a/bin
and type ./matlab.
Other applications like firefox and atom are recognized as ...
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0
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81
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Here HDLM in Matlab, App ID and App code credentials validation
I created a Freeminum account in Here technologies website and generated the App ID and App code. I tried to use those credentials in the HERE HDLM feature in the Automated driving Toolbox in Matlab.
...
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1
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82
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Is there any way to tell MATLAB to close/exit all open executables/MEX files?
I am currently working on a project that uses MATLAB and MEX files.
I frequently make changes to the MEX source files for testing, and then go to replace these files with my newly-compiled ones.
...
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1
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45
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Assistance with forming normal vectors on the graph
I am doing an assignment question link to image I am trying to find the normal vectors to my 'ice-cream' cone curve, which consists of a part cone and part sphere. I need help with the code because I ...
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1
answer
1k
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Matlab fit function not accepting "numeric" data type
This is driving me crazy, I'm just trying to fit a gaussian curve to some data using Matlab's fit function (r2017a).
gaussEqn = 'a*exp(-((x-b)/c)^2)+d'
f = fit(x,y,gaussEqn);
But I get this error:
...
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0
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How to create a 3D plot with orthographic projections – Matlab
How can I generate a 3D plot with the orthographic projections of a parametric curve on the inside walls of the 3D plot, as shown in this youtube video?
I can generate a 3D plot of the curve using ...
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0
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106
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Create a 3D space for dots moving in a given direction
I have written a code that animates 2d dots moving in a certain direction. I tried to create a 3rd dimension using spherical coordinates, and for that I used two times the psychtoolbox function Screen(...
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1
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83
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Parametric plotting on MATLAB
I am working on a quantitative finance problem, and I wish to plot the following functions:
mu= 0.1*w+0.14*(1-w) and sigma = (0.12^2)*w^2+0.4*0.12*0.2*2*w(1-w)+(0.2^2)*(1-w)^2;
for w between 0 and 1. ...
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1
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301
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MathWorks is written for Lego firmware V1.03, but Lego is up to V1.10
MathWorks (MATLAB and Simulink) is/are written for Lego firmware 1.03! (with no TelNet ID/passkey) Versions 1.07 and 1.08 also do not require the ID/passkey. Versions 1.09 and 1.10 do require an ID/...
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When I try to install matplotlab library getting the error mentioned in the description
When I try to install matplotlab library in my python 3.7.3, I am getting the below error,
Could not find a version that satisfies the requirement matplotlab (from versions: )
No matching ...
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1
answer
309
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Editing Individual Bar Colors in MATLAB
I am writing a sample code in MATLAB to display profit of a business over a certain amount of time. So far I have plotted the following with relative ease.
time = {'4 weeks','12 weeks','24 weeks','27 ...
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2
answers
196
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Windows: make application installed in Program Files seen like it has no spaces
I have Matlab installed in 'Program Files', and I need to install the toolbox that requires a path without any spaces. The problem is I can't perform reinstallation of that program in another location....
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0
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268
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Matlab/Simulink: How to programmatically edit the Solar Cell component?
I am trying to programmatically add components to a Simulink model. The programmatic model editing logic of MATLAB is very straight-forward (reference), but here I run into an issue.
I am struggling ...
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1
answer
1k
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How to revert GCC installation on Centos 7
I recently installed gcc 6.3.0 following the instructions on this site as it is the supported compiler for the 2018b release of Matlab and Simulink.
However due to compatibility issues with other ...
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0
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765
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Passing arguments to MATLAB script/function
I'm trying to pass arguments to my MATLAB script via this command in a Terminal running Bash:
matlab -nodisplay -nosplash -nodesktop -r "K18 1 20 'file.csv'" -logfile log.log
The K18.m file looks ...
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1
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581
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filtering MATLAB results with strfind
myver = ver;
myver(1:5).Name
returns:
ans = 'Computer Vision System Toolbox'
ans = 'Control System Toolbox'
ans = 'Curve Fitting Toolbox'
ans = 'DSP System Toolbox'
ans = 'Database Toolbox'
...
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2
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43
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How to output a table with specified header columns in Matlab?
My technique of making a vector out of "column" variables in a table only works part of the time. What is different about K1 from index in the following code?
I am debugging a numerical method and I ...
- 101
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0
answers
48
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How can I use MatLab to optimize based on relative rank?
This is a problem that I have previously addressed in Excel, but would like to move to MatLab for better quality solutions.
Where I work, there is a semiannual process to rank new initiatives. They ...
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0
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62
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Automatically kill a process based on zise and timeout
I am using Matlab which is constantly generating ghost excel processes - our around 40 mb each and whcih refuse to close on their own (after Matlab request) - I wonder if there is a way to ...
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1
answer
39
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Merge columns based with date column
I have an excel table with several columns(as shown in the attached picture).I want to merge these ROC1,ROC2,ROC3 and ROC5 where the dates match for them.So an ideal row should be Common Date,ROC1,...
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1
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1
answer
283
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computing groebner basis in Matlab [closed]
I am completely new in Matlab and want to compute groebner basis of some polynomials.
I just wrote the following code in a new window in Matlab but it says gbasis is undefined!
syms x1 x2 x3 x4
p = ...
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1
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507
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Cygwin - error loading shared library: arm-elf-gcc.exe from GNUARM
I have installed Embedded Robot Coder, a set of tools for developing embedded ARM applications, e. g. for Lego NXT brick, using MATLAB on Windows. It contains Cygwin, GNUARM utilities and so on. When ...
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0
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34
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How to do a subtraction of each element in a row with the first element of each row using a loop function MATLAB?
This is my matrix:
a=
2.88018141156171 4.49406146768661 4.39969572964863 5.77382684781782
0.302326568062510 0.913580405174539 1.38826913246346 2.16529080203233
And this is my ...
1
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1
answer
62
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what does an equality inside a plot function in MATLAB mean?
So I´m just new on MATLAB and this may be a very silly doubt but when generating basic signals for signal processing I have this:
t = (-1:0.01:1)';
impulse = t==0;
plot(t,impulse)
(from: https://...
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0
answers
103
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Matlab crashes with Python 2.7 virtual environment on Linux [Manjaro]
So I have some code in Matlab that calls functions from Python's scikit-learn module. The problem is when I try to use Python 2.7 in a virtual environment created via Anaconda, it exits out with ...
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