Re: How best to plot contours + explicit lines?

[<dan...@ie...>]

> On Tuesday 22 March 2005 08:26 am, Petr Mikulik wrote:
>> I wish also an option "samecolor" or whatever... even I have tried:
>>
>> set contour
>> set cntrpar levels 30
>> splot x*x-y*y with line lc rgb "#000000"
>> splot x*x-y*y with line lc rgb "#000000"
>>
>> but it uses the whole color palette instead of a single color. Bug?
>
> I suppose it's a bug, although I honestly don't know what the
> expected behaviour would be.  If you start a contour series with
> a fixed linetype then it auto-increments line types (colors) for
> successive contour levels, right?  But if you start it off with
> an arbitrary color, as you did with 'lc rgb "#foo"', then how
> should it determine the color of the next contour level?
>
> If what you want is to have all contours the same color,
> then the obvious syntax would be something like
>     set contour samecolor
>
> although surely there must be a better keyword.

Yes, probably a better keyword.  Getting back to a previous discussion,
without auto-labelling of the level curves, the contour plot with a singl=
e
color is difficult to interpret.  Well, it is probably still of some use
for judging overall characteristics of the function.  Probably looks nice
too.

Dan