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Re: plotting issues and questions

From: Matt Funk
Subject: Re: plotting issues and questions
Date: Thu, 26 Apr 2007 10:08:13 -0600
User-agent: KMail/1.9.5


thanks for the answer. I don't want to be too annoying with this. One last 

Is it possible to send octave data through __gnuplot_raw__ directly to 
gnuplot. For example:
If i have a vector 'a' which i would like to plot, what would be the simple 
command using __gnuplot_raw__ to send it to gnuplot and plot it?

The reason i cannot use octave 2.9.10 is that the build process fails with an 
internal compiler error (which i think is due to it running out of memory in 
the process). On another machine that i have access to i run out of the disk 
space. This has been pretty frustrating so that's why i need to find a way 
with what i have available.


On Wednesday 25 April 2007 22:28, John W. Eaton wrote:
> On 25-Apr-2007, address@hidden wrote:
> | i am running octave 2.9.9. I wrote scripts which read in data, compute
> | stuff and plot. I need to be able to customize the plots quite a bit in
> | terms of linewidth, size, etc ... . I also would like to draw arrows on
> | the graph.
> |
> | I do not want open an X windows when plotting but simply plot to a file.
> | Since gset is going to be dumped (at least that's one warning i read) i
> | use __gnuplot_raw__, which, i believe, passes the command straight
> | through to gnuplot? However, I read that the __gnuplot_raw__ is for
> | internal use only. So how do i direct the output to a file without using
> | __gnuplot_raw__/ __gnuplot_set__ and without having to open an X-window
> | first and then saving the plot?
> |
> | Further, i would like to be able to take advantage of gnuplot's
> | linestyles by defining them and then using them. But i want to plot data
> | i created in octave. So for example, i have an vector 'a' which i want to
> | plot. I tried: __gnuplot_raw__ ('plot a');
> | but that did nothing. I guess my question is how i can pass a octave
> | container/vector to gnuplot to be plotted?
> |
> | The other thing i tried was to use gplot. But that was a complete
> | failure. The first example in the docs:
> |
> | gplot rand (100,1) with linespoints
> |
> | threw a syntax error.
> |
> |
> | your help is greatly appreciated,
> This works in 2.9.10:
>   figure ('visible', 'off');
>   x = -pi:0.01:pi;
>   plot (x, sin(x), 'linewidth', 10);
>   print -depsc2
> Or, if you really love working with gnuplot directly, then just use
> Octave to do the computations, write some data files, and run gnuplot
> separately, or use __gnuplot_raw__ to send commands and data directly
> to gnuplot from Octave (but don't mix with any higher level Matlab
> style plot commands at all).
> jwe

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