Date: 12 May 1998 18:55:13 +0200 From: Walter Hafner <hafner@informatik.tu-muenchen.de> To: freebsd-questions@FreeBSD.ORG Cc: kheuer@gwdu60.gwdg.de, Jochen.Solbrig@urz.uni-heidelberg.de Subject: Re: scientific plotting Message-ID: <srjlns78m4u.fsf@hprbg5.informatik.tu-muenchen.de> In-Reply-To: Konrad Heuer's message of "Tue, 12 May 1998 17:21:51 %2B0200 (CEST)" References: <Pine.BSF.3.96.980512171225.18161A-100000@gwdu60.gwdg.de>
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Konrad Heuer <kheuer@gwdu60.gwdg.de> writes: > On Tue, 12 May 1998, Jochen Solbrig wrote: > > > i'm looking for a scientific plotting package which also > > can do numerical calculations, like > > data fitting or fft. it should be able to edit > > data (multiplying data columns, etc.) > > I have not very much experience with `octave' but it may help you. Octave > does numerical calculations and uses Gnuplot for plotting. Both are free > packages within the distribution, of course. The combo 'octave+gnuplot' is in fact not bad. I'm in the process of writing a PhD thesis on adaptive color classification in images. I have access to Mathematica and Maple. Both of them are totally worthless when it comes to handling large amounts of numerical data (i.e. color images). The tool of choice in this case (number crunching, analysis and plotting) would definitely be MATLAB (not: _not_ Matlab; different package). Unfortunately it costs huge amounts of money ... The site http://math.nist.gov/ and http://www-ocean.tamu.edu/~baum/ocean_graphics.html give very comprehensive overviews over mathematical software packages. I tried quite a couple of freeware/shareware packages and ended with - octave 2.1.5 http://www.che.wisc.edu/octave/ - gnuplot 3.6 Beta http://science.nas.nasa.gov/~woo/gnuplot/beta/ (The gnuplot homepage is at http://www.cs.dartmouth.edu/gnuplot_info.html) Note: You have to use 3.6 beta in order to perform fitting. gnufit 1.2 supports fitting aswell but isn't as good as gnuplot 3.6 beta. Another handy tool for data fitting is 'fudgit' (sorry, no URL at hand). Both 'octave' and 'gnuplot' won't do all the things you ask for. But together they come quite close. Correctly used, they are pretty mighty. -Walter -- Walter Hafner_______________________________ hafner@in.tum.de <A href=http://www.in.tum.de/~hafner/>*CLICK*</A>; The best observation I can make is that the BSD Daemon logo is _much_ cooler than that Penguin :-) (Donald Whiteside) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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