Re: [Gnuplot-info] stdin datafile as a variable

[Richard H. <r.h...@rl...>]

Hans-Bernhard Bröker wrote:

> Richard Henwood wrote:
>> I would like to do something like the following contrived example:
>> 
>> gnuplot> dataFile = sprintf("\'< ps aux | tail -%d\'", 20)
>> gnuplot> plot dataFile u 2
>>          warning: Skipping unreadable file "'< ps aux | tail -20'"
>>          No data in plot
>> 
>> as the error copied above indicates, I'm not having much joy!
>> 
>> Any suggestions?
> 
> You've over-contrived your example.  The \' are not useful.  Drop them,
> and you should be getting somewhere:
> 
> 
> dataFile = sprintf("< ps aux | tail -%d", 20)
> 

ah! Indeed;
Many thanks for your prompt help in contriving this example; it immediately
revealed the real cause of my problems: using index out of range...
(sheepishly: ...which gnuplot had been trying to tell me all along!)

r,