Re: Does gnuplot still read commands from stdin?

[Daniel J S. <dan...@ie...>]

On 02/09/2015 12:07 AM, Philipp K. Janert wrote:
>
> No, it doesn't work for me.
>
> Here is the contents of my test script:
>
> set t pngcairo
> plot sin(x)
>
> I invoke it like this:
>
> cat script.gp | gnuplot>  graph.png
>
> When I use gnuplot 4.6 patchlevel 3 (which comes
> with my distro), all is well. But when I use version
> 5, nothing happens - I simply get dropped into an
> interactive session.
>
> Mind you, batch processing works with version 5:
>
> gnuplot5 script.gp>  graph.png
>
> is fine.

Version 5.1 patchlevel 0 works on your test script.

What are you seeing when the shell goes into interactive session?  If I run

gnuplot > graph.png

as if the two sides of the command were treated normally (i.e., not one 
piped into another), the interactive part doesn't work because the 
visual output is sent to graph.png.

How about something in your autoload .gnuplot file that might be causing 
problems.  (Although I can't imagine what that might be.)

Dan