gnuplot-info

[Gnuplot-info] Coloring multiple-curve `splot's

[<lud...@la...>]

Hi,

I'm plotting several surfaces with `splot' on a single graph.  I would
like to color those surfaces, or the lines that make them up, according
to what they represent (i.e., not according to their height, as `pm3d'
does).  IOW, I would like to have each surface painted with its own
color.

In color PostScript output, this is what happens by default.  However,
in black & white PostScript, GNUplot automatically uses variants of
dashed and dotted lines instead of colored lines, which I would like to
avoid.  Specifying `with palette' (and having a single-color palette)
doesn't do the trick since there can be only one palette at a time, for
all surfaces.

Any idea?

Thanks,
Ludovic.

Re: [Gnuplot-info] Coloring multiple-curve `splot's

[<HBB...@t-...>]

Ludovic Courtès wrote:

> In color PostScript output, this is what happens by default.  

So why don't you just use that?

> However, in black & white PostScript, GNUplot automatically uses
> variants of dashed and dotted lines instead of colored lines, which I
> would like to avoid.

Well, then don't use black&white PostScript.  What colour did you expect 
your black&white PostScript printer to be able to print?

Re: [Gnuplot-info] Coloring multiple-curve `splot's

[<lud...@la...>]

Hi,

Hans-Bernhard Bröker <HBB...@t-...> writes:

> Well, then don't use black&white PostScript.  What colour did you expect 
> your black&white PostScript printer to be able to print?

Well, we never know.  ;-)

Seriously, I'm just not used to inserting colored figures in a b&w
document, and I thought it might be possible to tweak GNUplot into doing
it.

Besides, how does "with boxes" work with `splot'?  I fail to understand
how it connects point together.  Or is it just supposed to be used with
`plot'?

Thanks,
Ludovic.

Re: [Gnuplot-info] Coloring multiple-curve `splot's

[<HBB...@t-...>]

Ludovic Courtès wrote:

> Seriously, I'm just not used to inserting colored figures in a b&w
> document, and I thought it might be possible to tweak GNUplot into doing
> it.

Doing _what_, exactly?  I think you've completely confused not just me, 
but yourself, by now.

Forget about the document, and think about the plots by themselvs.  What 
do you want: coloured plots, or b&w ones?  If b&w, how do you suppose a 
reader will be able to tell apart the curves for different datasets in 
the same plot?  Why is

	set term postscript eps enh mono dashed

_not_ what you want?

> Besides, how does "with boxes" work with `splot'?  

Fine if what you really wanted was 'with impulses' --- not at all, 
otherwise.

Re: [Gnuplot-info] Coloring multiple-curve `splot's

[<lud...@la...>]

Hi,

Hans-Bernhard Bröker <HBB...@t-...> writes:

> splot doesn't do boxes, so there's nothing to be said about how those 
> boxes might be generated.

Thanks, that's exactly what I asked for a few messages ago
(<87f...@la...>).

Ludovic.

Re: [Gnuplot-info] Coloring multiple-curve `splot's

[<lud...@la...>]

Hi,

Hans-Bernhard Br=F6ker <HBB...@t-...> writes:

> Forget about the document, and think about the plots by themselvs.
> What do you want: coloured plots, or b&w ones?  If b&w, how do you
> suppose a reader will be able to tell apart the curves for different
> datasets in the same plot?  Why is
>
> 	set term postscript eps enh mono dashed
>
> _not_ what you want?

Sometimes, when you have few curves, you may want to use solid lines
with different levels of gray rather than a mixture of solid, dashed,
and dotted lines.  Is that clearer?

>> Besides, how does "with boxes" work with `splot'?
>
> Fine if what you really wanted was 'with impulses' --- not at all,
> otherwise.

Sorry, I don't understand this.

More precisely: How does GNUplot connect points together when using
"with boxes" in `splot'?  I have splots here with nice grids when I use
"with lines" but changing it to "with boxes" yields unreadable plots.

Thanks,
Ludovic.

Re: [Gnuplot-info] Coloring multiple-curve `splot's

[<HBB...@t-...>]

Ludovic Courtès wrote:
> Sometimes, when you have few curves, you may want to use solid lines
> with different levels of gray rather than a mixture of solid, dashed,
> and dotted lines.  Is that clearer?

So use the 'linecolour' directive available in recent versions (release 
candidates, CVS head) to pick grays for your lines.

>>> Besides, how does "with boxes" work with `splot'?
>> Fine if what you really wanted was 'with impulses' --- not at all,
>> otherwise.

> Sorry, I don't understand this.

You would have, if you had read any of the relevant documentation. 'help 
splot', for starters, has a statement containing this phrase:

     except that the plotting styles available to splot are limited to

splot doesn't do boxes, so there's nothing to be said about how those 
boxes might be generated.