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From: Karl Ratzsch <mail.kfr@gmx.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: set range for second independent variable in special file '++'
Date: Mon, 27 Mar 2017 03:35:39 +0200
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Am 26.03.2017 um 21:30 schrieb Ethan A Merritt:
> Karl Ratzsch wrote:
>> Hm, there are many, i think. The special filename "++" at the moment
>> always directly maps the second independent variable to the y axis,
>> but it could easily be meant to be sth else. Of course one can scale
>> the values to the wanted sampling range in the "using" specifier, but
>> you need a number of additional variables and it makes the script hard
>> to read.
> 
> That much is a trivial change and I agree it is an improvement.
> 
> So as of today's CVS for the development version, '++' uses urange and
> vrange for sampling rather than using xrange and yrange.
> This does not by itself allow you to refer to the sampled variables
> as "u" and "v" however, you'll still have to refer to $1 and $2.
> 
> I know of one minor downside to this change.
> Currently you can't set u or v to log-scale, so with this change
> you won't get nonlinear sampling on '++' even after "set log xy".
> That can be added later.

Not much of a downside, but what about "+" ? Will it use trange now?
That's a bit strong, re backwards compatibility. ?