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From: | Jérôme LEFEVRE |
Subject: | getting graph coordinates and others |
Date: | Sun, 20 Oct 2002 21:49:40 +1100 |
Hi,
I 'm new octave user and i try to adapt matlab tool
with octave and gnuplot. Tools are mesh builder and tide analyser for
oceanographic and finite element model purpose.
1/
My main problem is with interactive dialog between
octave and gnuplot, specialy with getting graph coordinates from plot.
With ginput, i can get screen ccordinates, but not directly "real" graph coordinates. In a other hand, new gnuplot package (3.8)
integrate mouse support, which allow user to zoomin, grab a point from plot with
pointer and so on.
In gnuplot help, man can read clipboard notion too. I have played a little around octave and gnuplot,
but i don't interstand how to act interactively between octave and gnuplot new
feature. I think that there is a mean to get or copy graph coordinates toward
octave, but i don't know how.
Anybody has an idea or a trick ??
2/
In FAQ, contributor and developper reffer others
plot package, like plplot or pgplot.
Do these plot pakage really support getting "real" graph coordinates and act interactivily with octave ? 3/
Matlab Toolbox from DARTMOUTH Numerical and
Mathematical Laboratory are using to generate and edit Finite Element
Mesh.
Slowy, i adapt program and function with octave, but i fear to meet problem with calculation time consumption. I work with large matrice (200000 - 500000 rows) and i will request octave for work like editing, interpolation, renumbering, bandwith reduction, refinment and diagnostic and final mesh plotting. Will Octave bring off this challenge ? Many thanks for your hint.
Best regards.
Jerome Lefevre.
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