I need to create a scientific plot in 2D of simple X,Y point data. I found what I feel is one of the most amazing Perl modules for such task. PDL (Perl Data Language) has a simple windows install that requires installing perhaps a total of 5 modules.
I had no trouble installing from an internet based ppm install. This solution is so cool that I wanted to share this with others, who have not had the opportunity to hear about this before. It is basically like commercial Matlab, it offers an interactive environment and allows one to manipulate large sets of numbers and create powerful graphs using both PGPLOT and it even has OpenGL bindings and can create a 3D renderings that the user can actually interactively rotate about in an OpenGL window! If this weren't enough, it includes GSL, GNU scientific library, to allow for things such as cubic spline interpolation, differentiation and integration. Anyways, this is all pretty amazing, and I wanted to share this with anyone who might one day have a need for such a thing. Does anyone in this list currently use PDL and PGPLOT? If so, I was wondering if I could ask you a question. I have basically figured out how to draw my own 2D graph. Basically, PGPLOT draws line segments to connect sample points. If one has a set of sample points, the closer they are to each other, the less 'line segmenty' the line looks - and the result is more like a smooth curve. I was wondering if anyone had an example that starts with a sparse X,Y sample set, and uses the GSL 'cspline' routine to 'make more closer spaced points', for the purpose of drawing a 'smoother' graph that takes on a cubic spline appearance. If anyone can help, that would be appreciated.
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