Rythms in time, patterns in space. How do living systems do it. What equations describe these phenomena? From the vein pattern in higher plants, through the circannual rythms of seasonal bulb floweing right upto schooling patterns of fish.
Tuesday, April 22, 2008
Getting to grips with Scientific Computing Tools on a MAC-osX
For somebody who spent time (and I am not proud of it) on a win32 machine and was quite happy even from a 64bit machine to keep programming 32bit, and sending off code to the big UNIX machines, its a bit of a mixed bag to be sitting at a Mac OS X terminal. MacBookPro. For one it needs a lot of beer.
Then it needs Octave - for which there is a binary installer available. But to plot anything you need gnuplot- anybody with Linux or Cygwin will tell you that- how on Mac I pray- well get the gnuplot precompiled file. Set the .profile files to set the path to the applications:
alias gnuplot="/Applications/Gnuplot.app/Contents/Resources/bin/gnuplot"
alias octave="/Applications/Gnuplot.app/Contents/Resources/bin/octave"
Oh, and as you might discover you have bash shell (mac OS X 10.5.*) but no .profile or .bash_profile file, then make it and add those lines to it. Kippis! Shanti.
Well. The Octave user list was VERY useful in fixing that. Here is the fix:
//------------------------
The alias command sets up a variable that applies only in your shell.
It won't help octave find gnuplot. You probably need to set up a symbolic
link to gnuplot in some directory on your path. Try:
ln -s /Applications/gnuplot/Gnuplot.app/Contents/Resources/bin/gnuplot \
/usr/local/bin/gnuplot
If this complains about permission precede this with a sudo and enter your
password when prompted.
//------------------------
"Mein f******, I can plot again", to rephrase Dr. Stragelove or Doktor Merkwuerdigliebe from Dr. Strangelove.
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