Need help on octave - simple plot

[tandiwijaya]

Hi,

I'm newbie, and just downloaded the octave 3.4.0 in Max OS X 10.7.3.

Im trying to do a simple plot and found the following error message:

code starts here:
=========
octave-3.4.0:1> x=[1 2]
x =

   1   2

octave-3.4.0:2> y=[3 4]
y =

   3   4

octave-3.4.0:3> plot(x)
error: popen2: popen2 (child): unable to start process -- Operation not
permitted
error: called from:
error:  
/Applications/Octave.app/Contents/Resources/share/octave/3.4.0/m/plot/__gnuplot_open_stream__.m
at line 30, column 44
error:  
/Applications/Octave.app/Contents/Resources/share/octave/3.4.0/m/plot/__gnuplot_drawnow__.m
at line 72, column 19
sh: /Applications/Gnuplot.app/Contents/Resources/bin/gnuplot: /bin/sh: bad
interpreter: Operation not permitted
error: `unset' undefined near line 4 column 1
warning: broken pipe -- some output may be lost
=========
code stopped here

Please help how how to solve this problem.

Thank You

Tandi.

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