Re: Plotting Question

[Tatsuro MATSUOKA]

----- Original Message -----

> From: Thomas D. Dean 
> To: Octave users list 
> Cc: 
> Date: 2015/6/22, Mon 08:08
> Subject: Plotting Question
> 
> Linux X11.
> 
> I have a script that works when sourced from within octave, but, when I start 
> from the command line, I get no plot.
> 
>>  cat dotest.m
> 1;
> A  = load ( 'test.dat' );
> ax =plotyy(A(:,1)/1000, 20*log10(A(:,3)./A(:,2)), A(:,1)/1000, A(:,4));
> title  ( 'Insertion Loss and Phase' );
> xlabel ( 'Frequency kHz' );
> ylabel ( ax(1), 'Insertion Loss db' );
> ylabel ( ax(2), 'Phase, debrees' );
> ylabel ( ax(2), 'Phase, debrees' );
> legend ( 'Insertion Loss','Phase' );
> grid on;
> ans = input ( 'Press return to close plot and exit' );
> close all;
> 
>>  /usr/local/bin/octave dotest.m
> Press return to close plot and exit
> 
> No plot displayed.
> 
> I believe this has to do with the shell, bash, forking and then exec'ing 
> octave.  Correct?
> 


I do understand why you can see plot from command line.
If you add drawnow(); like:

grid on;
drawnow();
ans = input ( 'Press return to close plot and exit' );


what happens?

Tatsuro