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From: Olaf Schultz <o.schultz@enhydralutris.de>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: Format change converter to 5.0?
Date: Sat, 1 Apr 2017 12:06:54 +0200
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On 03/31/17 05:14, Karl Ratzsch wrote:
> Am 30.03.2017 um 20:44 schrieb Olaf Schultz:
>> I have several files from older versions (4.4, 4.6...) which must now
>> run also under 5.0... and that (censored) version complains not only
>> ones about strange format and does nothing (better than just plot and
>> strange results on the screen)...
>> Actual:
>>
>> set timefmt x "%Y-%m"
>>
>> Is there a script/tool existing which is able to convert the format of
>> gnuplot-files to the new version?
> 
> ("censored"?)
> 
> Not to my knowledge. Who would want to spend more time on developing
> such a tool than on converting a few old scripts?
> 
> But you can just go and strip the axis specifiers from all "set timefmt"
> commands in your scripts, and see what happens. I'll doubt you see any
> difference. According to the docs, even version 4.4 never expected any
> axis specifier there (it was accepted, though, up to 4.6.6).


That's what I have here in a file... (save "...gnu" So gnuplot had wrote
this syntax in the past:

#!/usr/local/bin/gnuplot -persist
#
#
#       G N U P L O T
#       Version 4.4 patchlevel 3
#       last modified March 2011
#       System: Linux 2.6.27.48-0.3-pae
#
#       Copyright (C) 1986-1993, 1998, 2004, 2007-2010
#       Thomas Williams, Colin Kelley and many others
#
#       gnuplot home:     http://www.gnuplot.info
#       faq, bugs, etc:   type "help seeking-assistance"
#       immediate help:   type "help"
#       plot window:      hit 'h'
# set terminal wxt 0
# set output
unset clip points
set clip one
unset clip two
set bar 1.000000 front
set border 31 front linetype -1 linewidth 1.000
set xdata time
set ydata
set zdata
set x2data
set y2data
set timefmt x "%Y-%m"
set timefmt y "%d/%m/%y,%H:%M"
set timefmt z "%d/%m/%y,%H:%M"
set timefmt x2 "%d/%m/%y,%H:%M"
set timefmt y2 "%d/%m/%y,%H:%M"
....


My ~/.gnuplot is rather short and does not consists that.

O.K. Here it worked for this file just open gnuplet, set timefmt without
that x and copy-paste the plot-line...

But I have also a lot of other files coming from 4.3.... where not only
this lines needs to be converted because just two \042 have to be
removed in several lines.

And if I go and write an awk-script for that... Should have started in
the past with just saving empty plit-files to find the diff with old/new
version and what to be removed/changed. Maybe I will do this...

Just to state: I like gnuplot, use it frequently since approx. 20 years,
at home and in the job... but this tiny but nerving format changes. Seem
that I have to do it as on the job (there 4.6.1 is the most actual
version;-)... install several versions also at home:-(

Olaf