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Re: 2d plot with varying line color

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antia wrote:

> Hi all,
> I would like to make an ordinary 2D plot of a function where the line
> color smoothly changes along a gradient or palette. Is this possible?

No, but...

> I know similar things can be done for 3D plots ...

You can use a 2D projection of a 3D plot for this.
See "help special-filenames"

> A minimal code of what I am trying to plot is:
> 
> --
> plot erf(x) notitle with lines
> --

set xrange [-5:5]
set yrange [-1:1]
set view map
splot '++' using 1:(erf($1)):(erf($1)) with lines lc palette


That gets you the plot you want with colors assigned from gnuplot's
default black->blue->orange->yellow palette.  For examples of other
palette definitions, see "help palette" or 
   http://gnuplot.sourceforge.net/demo_cvs/pm3dcolors.html


> 
> I would like the erf function to be red for low values of x and move
> towards blue on high values of x, i.e. I would like a temperature-like
> scale.
> 
> Thanks for any help!

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2d plot with varying line color antia <antia.lamas@gmail.com> - 2011-06-01 09:38 -0700
  Re: 2d plot with varying line color sfeam <sfeam@users.sourceforge.net> - 2011-06-01 11:19 -0700

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