[ILUG] gnuplot - date and time of plot ?

[Padraig Brady]

Declan Grady wrote:
> Hi,
> I'm working with gnuplot, creating psotscript files for printing from an
> ascii file with 2 columns.
> 
> I'd like to have the first line of the ascii file to have the date and time
> of the measurments, and an alphanumeric reference number, but I also need
> to exclude this line from my plotted data.
> 
> Ideally, I'd like to pick up this info, in the graph title.
> 
> I've been googling for a "while" now and cannot find a way to do it.
> 
> I'm sure someone has a way ?
> 
> Thanks,
> Declan
> 
gnuplot supports executing external commands I think
so you can probably do something like:

title `head file | cut -f2`
plot file using "format"

Note gnuplot will ignore lines it can't plot (or that don't match
the format) automatically.

Padraig.