Freemat help8/17/2023 ![]() ![]() ![]() ![]() Click to download FreeMat Manual in PDF form.There are three sources of help (beyond the user manual, of course). A Google Group has been set up for support.The e-mail address for the group is Bug reports should be filed here: Report a Bug It is open to anyone to join and read, but you must be a member to post, and posts are moderated (necessary after the spam-bots took over the old sourceforge mailing list). Feature requests should be filed here: Request a Feature Documentation.Built-in interactive help (Online Help), from the FreeMat Console by typing.Tutorials on FreeMat are available hereįreeMat is an environment for rapid engineering and scientific processing.It is similar to commercial systems such as MATLAB from Mathworks and IDL from Research Systems, but is Open Source. It is free as in speech and free as in beer. Previous versions of FreeMat were released under MIT licenses. The current version is released under GPL. Why another MATLAB clone? Have you heard of Octave, Scilab, etc.? There are a number of great tools that are available to GPL-ed code (e.g., Qt, FFTW, FFCALL), and FreeMat is now one of them. Yes! FreeMat is chartered to go beyond MATLAB to include features such as a codeless interface to external C/C++/FORTRAN code, parallel/distributed algorithm development (via MPI), and advanced volume and 3D visualization capabilities. Is FreeMat 100% compatible with MATLAB? What about IDL? As for the open source alternatives, try them out and decide for yourself. FreeMat supports roughly 95% (a made up statistic) of the features in MATLAB. N-dimensional array manipulation (by default, N is limited to 6).īecause we like to lead with the positive, here are the features in that are supported: The following table summarizes how FreeMat stacks up against MATLAB and IDL.Support for 8,16, and 32 bit integer types (signed and unsigned), 32 and 64 bit floating point types, and 64 and 128 bit complex types.Built in arithmetic for manipulation of all supported data types.Support for solving linear systems of equations via the divide operators.Eigenvalue and singular value decompositions.Full control structure support (including, for, while, break, continue, etc.).Heterogeneous array types (called "cell arrays" in MATLAB-speak) fully supported.Full support for dynamic structure arrays.Pass-by-reference support (an IDL feature).Codeless interface to external C/C++/FORTRAN code.Native support for Mac OS X (no X11 server required).I assume I can attach a plot for you here - if the attachment goes through, that's what the output looked like for me for m=1, c=1, k=1 (critically damped, which looks correct) with an initial stretch of 2 and velocity of 4.3D Plotting and visualization via OpenGL.Function pointers (eval and feval are fully supported). With that correction, your program seems to work. This forces Freemat to do the multiplication element-by-element instead of a matrix multiplication. after the first expression, like so: x=A*exp(-z*w*t.)*sin(wd*t+phi). To do an element-wise multiplication, which is what I assume you want, simply put a. This results from trying to multiply two matrices whose dimensions don't match up correctly, namely (A*exp(-z*w*t)) and (sin(wd*t+phi)). In C:/Users/tj/Desktop/Vibo_amo.m(Vibo_amo) at line 12Įrror: Requested matrix multiplication requires arguments to be conformant. If you try to run it as is, you'll come up with the error: Also, I gave your program a run, you have a debugging error in line 12. If you want to do further manipulation, you'll want to run it as a script (i.e.: take the first line out, define your variables inside the script explicitly, then you can source the script or just type its filename at the prompt). The arguments give you the ability to change the variables at will from the command line, but bear in mind that once the function has executed, you will not be left with any of your calculated variables from inside the function. You need to just type the function name with the arguments, like so: Because you specifically named this a function, to which you pass arguments, you can't execute it line-by-line with the source command.
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