Re: [Gnuplot-cvs] CVS Update: gnuplot

[Hans-Bernhard B. <br...@ph...>]

Ethan Merritt wrote:

> In what way do you see this as different from the notion of
> `reset, then apply explicit changes` ?

Not a lot.  But that's partly missing the point: the concept of 
"explicit changes" currently simply doesn't exist anywhere in save.c, 
except your recent modification.  It might be a good idea to keep in 
mind should we ever want to re-write save_set() almost from scratch, but 
for now, the strategy is:  save all settings in a way that overwrites 
whatever previous settings there were.

> While we're on the topic, I have a related problem that I really don't
> know how best to deal with.   The "datastrings" and "histograms" modules
> make heavy use of the ability to read tic-labels and key-titles from a
> data file.  Internally, these label structures are fed into the same
> data structures that are loaded by explicit user commands like
>   set xtics ("foo" 1, "bar" 2, "etc" 3)
> 
> But this means that when you `save` the current state, you get a dump
> of the most recent tic labels read from a data file.  This is really
> annoying if you don't remember to wipe the xtic entries clear, either
> before saving or after restoring.   What are your thoughts on this
> issue?

I see two major possibilities:

1) handle it the same way it's done for other things that change 
dynamically during a plot, most notably the ranges: duplicate the key 
data structures, prefix one with "set_", and copy the set_ versions into 
the un-prefixed instance in axis.h:AXIS_INIT{2,3}D

2) move the labels found in the data file to some other place, and 
change gen_tics and/or xtick{2,3}d_callback to use that instead of 
normal ones.