A researcher has created a small simulation in MATLAB, and we want to make it accessible to others. My plan is to take the simulation, clean up a few things, and turn it into a set of functions. Then, I plan to compile it into a C library and use SWIG to create a Python wrapper. At that point, I should be able to call the simulation from...
I see in the MATLAB help (matlab -h) that I can use the -r flag to specify an m-file to run. I notice when I do this, MATLAB seems to start the script, but immediately return. The script processes fine, but the main app has already returned. Is there any way to get MATLAB to only return once the command is finished? If you're calling it...
I want to combine two structures with differing fields names. For example, starting with: A.field1 = 1; A.field2 = 'a'; B.field3 = 2; B.field4 = 'b'; I would like to have: C.field1 = 1; C.field2 = 'a'; C.field3 = 2; C.field4 = 'b'; Is there a more efficient way than using "fieldnames" and a for loop? EDIT: Let's assume that in t...
I have an xPC target application that talks to a device over RS-232. I am using the xPC serial block for this. To talk to this device I first have to start at a default speed, say, 9600 bps, request a change of speed to, say 57600 bps, then change the speed on my side to match it. The problem with the xPC block is that it forces you to c...
I have a Simulink xPC target application that has blocks with discrete states at several different sample rates and some sections using continuous states. My intention on keeping the continuous states is for better numerical integration. What creates the problem: One block is reading a device at a very fast rate (500 hz). The rest of t...
Using the zip function, Python allows for loops to traverse multiple sequences in parallel. for (x,y) in zip(List1, List2): Does MATLAB have an equivalent syntax? If not, what is the best way to iterate over two parallel arrays at the same time using MATLAB? ...
Is there an open-source alternative to MATLAB's fmincon function for constrained linear optimization? I'm rewriting a MATLAB program to use Python / NumPy / SciPy and this is the only function I haven't found an equivalent to. A NumPy-based solution would be ideal, but any language will do. ...
Some things that I personally find as shortcomings in the MATLAB Editor: virtually no code completion available does not run OS native (on MacOS) - but in X-Environment (shortcuts, copy&paste problems, keymappings, non intuitive window-managing) virtually no refactoring tools Are there alternative editors with these features? ...
In order to distribute a function I've written that depends on other functions I've written that have their own dependencies and so on without distributing every m-file I have ever written, I need to figure out what the full list of dependencies is for a given m-file. Is there a built-in/freely downloadable way to do this? Specifically ...
In MATLAB 2008a, is there a way to allow a class method to act as a uicontrol callback function without having to make the method public? Conceptually, the method should not be public because it should never be called by a user of the class. It should only be called as a result of a UI event triggering a callback. However, if I set th...
I think everyone would agree that the MATLAB language is not pretty, or particularly consistent. But nevermind! We still have to use it to get things done. What are your favourite tricks for making things easier? Let's have one per answer so people can vote them up if they agree. Also, try to illustrate your answer with an example. ...
I would like to sort a matrix according to a particular column. There is a sort function, but it sorts all columns independently. For example, if my matrix data is: 1 3 5 7 -1 4 Then the desired output (sorting by the first column) would be: -1 4 1 3 5 7 But the output of sort(data) is: -1 3 1 ...
I have a lot of nice MATLAB code that runs too slowly and would be a pain to write over in C. The MATLAB compiler for C does not seem to help much, if at all. Should it be speeding execution up more? Am I screwed? ...
How have you tweaked the MATLAB environment to better suit your needs? One tweak per answer. ...
Does anyone know of such a library that performs mathematical optimization (linear programming, convex optimization, or more general types of problems)? I'm looking for something like MATLAB, but with the ability to handle larger problems. Do I have to write my own implementations, or buy one of those commercial products (CPLEX and the l...
I'm trying to change the background color of a single subplot in a MATLAB figure. It's clearly feasible since the UI allows it, but I cannot find the function to automate it. I've looked into whitebg, but it changes the color scheme of the whole figure, not just the current subplot. (I'm using MATLAB Version 6.1 by the way) ...
We're trying to analyse flow around circular cylinder and we have a set of Cp values that we got from wind tunnel experiment. Initially, we started off with a sample frequency of 20 Hz and tried to find the frequency of vortex shedding using FFT in matlab. We got a frequency of around 7 Hz. Next, we did the same experiment, but the only ...
I've been recently asked to learn some MATLAB basics for a class. What does make it so cool for researchers and people that works in university? I saw it's cool to work with matrices and plotting things... (things that can be done easily in Python using some libraries). Writing a function or parsing a file is just painful. I'm still at...
Hallo, I have a question about MATLAB I am not experienced in Matlab and I would like to tell me if i have an input file (m-file) that contains some variables with their numbers ie a=5,b=6,c=7 and i want to use that m file in another program(main m-file) that uses these variables to calculate S=a+b+c. How in the main file i can read the ...
Hallo, If i have an M-file that calculates for example d=a+b+c(The values on a,b,c were given earlier).What command should I use in order to produce an output M-file showing the result of this sum? ...