[fpc-pascal] Numerics and graphics in Free Pascal

[Paulo Malheiros]

On Fri, 2010-12-10 at 22:33 +0100, Karsten Rothemund wrote:
> Hello list,
> 
> I am new to the list and read it for nearly a week now. So it may be the
> topic is already answered. In this case, I say sorry.
> 
> I want to start programming in Free Pascal using Lazarus (installed from
> the Debian Squeeze) because I want to do programming on my Debian system
> but I also want use the programs on Windows too. My interests are
> related to numerics and scientific calculations.
> 
> There are two things I haven't found in the documentation up to now:
> 
> 1. is there a library to easy handle matrices or do other numerical
> calculations like the numpy package does for python? (multiply, solve 
> Ax=b, numerical integration)

To handle matrices I use DynMatrix
http://paginas.fe.up.pt/~paco/pmwiki/index.php?n=DynMatrix.DynMatrix

> 
> 2. display graphic representations of data (ploting functions or points
> in coordinate system, contour plots, 3D plots, etc; example here again
> my be python multiplot package)? I know there is something like drawing 
> graphic primitives (lines, points, arcs ....) which of course can be used 
> to code something. 

Lazarus has TAChart component for 2D graphs
http://wiki.lazarus.freepascal.org/TAChart

I've used GLScene for some 3D plotting
http://wiki.lazarus.freepascal.org/GLScene

You should try the Lazarus mailing list for extra help.

Paulo M.

> 
> But I don't what to invent the wheel again ;)
> 
> Thank you for your answers
> 
> Karsten
> 
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