Re: [Gnuplot-info] using a variable's value in a title

[SB <ste...@gm...>]

Hello Doug,

You can set a label, instead of setting the title.

Setting the label, you have the possibility to include variables into
your text (see "help label"). 
Unfortunately (at least in my version of Gnuplot - Ver. 4.0) this
doesn't seem to work for setting the title.

You need to have a placeholder, e.g. %g depending on the type of
variable you use and the way you want it to be displayed.

In your case that could be:

set label 1 "Plot Number %g",n at graph 0.5, graph 0.5

If you need to find out what kind of placeholder you want to use, look
in the internet for an documentation of "printf" in the C-libraries.

In case you want to display more than one variable, this is also
possible:

set label 1 "Plot Number %g ",n, "at Parameter Value %g", parameter at
graph 0.5, graph 0.5


Schöne Grüße,

Stephan

Am Montag, den 16.10.2006, 22:20 -0400 schrieb doug bull:
> Hi,
> 
> I have a large amount of data to view (about 300 plots) and I view them for 
> 1 second each using reread in the following load file - call it cmd1
> 
> n=n+1
> plot 'junkderivative'  every :::n::n u 7:8 w l
> pause 1
> if(n<301) reread
> 
> In gnuplot I set n=0 and then load cmd1. All works very nicely. However, I 
> want to label each plot using the "value" of the variable n in cmd1. That is 
> I would like to do something like:
> 
> plot 'junkderivative'  every :::n::n u 7:8 title "$n plot" w l
> 
> where $n use the value of n at the time the plot is called.
> 
> Thank you,
> 
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