gnuplot with octave cygwin32

[Billinghurst, David (RTD)]

I had some trouble today plotting from octave-2.0.13 on a PC.

Problem 1 - "broken pipe" error on first use of plot()

This happened when my working directory was on a different drive to the
octave and gnuplot binaries
Following the instructions in
ftp://ftp.che.wisc.edu/pub/octave/BINARIES/gnu-win32/README.gnu-win32-instal
l
I set the variable gnuplot_binary to point to the pipe-gnuplot program 
        gnuplot_binary = "pipe-gnuplot /bin/wgnuplot"
This worked fine as long as I my current directory was on the same drive as
/


Solution:
Put wgnuplot in the path and set 
        gnuplot_binary = "pipe-gnuplot wgnuplot"

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Problem 2

Once I had solved problem 1, gnuplot would plot but could not find the
temporary file in /tmp

Solution

Set shell variable TMPDIR=. to put the temporary files in the current
directory. 
At least . has a similar meaning in DOS and Unix

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I am open to cleaner solutions

+++++++++++++++++++++++++++++++++++++++++
(Mr) David Billinghurst
Comalco Research and Technical Support
PO Box 316, Thomastown, Vic, Australia, 3074
Phone:  +61 3 9469 0642
FAX:    +61 3 9462 2700
Email:  address@hidden