Re: [Gnuplot-info] abort/continue plotting on error

[Ethan A M. <eam...@gm...>]

On Friday, 26 April 2013, seb_kramm wrote:
> Hello,
> 
> Currently, when chaining different plot commands in a script, it seems that gnuplot 
> aborts when encountering a error (unreadable data file, in my case).
> 
> Is there any way to tell gnuplot not to abort and to move on to the next 'plot' 
> command ? I searched the manual but found nothing about error handling.

There is no general mechanism for continuing to execute a script after an error.

> I use 4.6 on Ubuntu.
> 
> The situation is as follows: I have many plots to draw from many computer-generated 
> data files. The script file is itself generated. Now, some data files are ill formed 
> or non-existent, due to some experimental error (say, the program that generates the 
> data crashes).
> But I would like to have the plots for all the other datafiles.

How about

  expected_file = "filename"
  stat = system("wc ".expected_file)
  if (stat ne "") {
     plot expected_file 
  }

If you want to test for a file that exists but is too short to
contain the expected data:

  stat = system("wc ".expected_file)
  if (stat ne ""  &&  int(word(stat,1)) > min_size) {
    plot expected_file
  } 

	Ethan

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