[Gnuplot-py-users] Assigning variables

[Olan B. <ol...@gm...>]

 Hello all,

Just a quick question on something I seem to be stuck with. With gnuplot.py
I want to be able to subtract the current timestamp from column 1. The most
straight-forward way seems to be to set an interim value 'now' and then pass
this into the plot statement. However I cannot figure out how to get the
timestamp variable 'now' from python assigned in gnuplot. A segment of what
I'm trying to do is below:

py:
        from time import time
        now = time()
        print now
        g('now =', now)  ## problem line. g() can't take the extra now input
        g.plot("'test.txt' using ($1-now):2")

text.txt:

1247220778.304284    10
1247220778.406589    12
1247220778.509067    10
1247220778.713930    8
1247220778.816432    11
1247220778.918740    10
1247220779.021023    10


Apologies if this is a simple question [which is seems like it is], but
after spending ages googling I still can't find the solution! Thanks for any
help..

Olan