Q: spectrum/rainbow colors in LaTeX/pstricks

[Wolfgang May]

Hi,

is there any style/package or at least some work available for
scanning through the spectrum of colors.

I have an idea, for example using

\begin{spectrum}
1
\nextcolor
2
\nextcolor
...
\nextcolor
3
\end{spectrum}

which chooses the colors according to their ordering in the rainbow
for setting some text (or a line smoothly changing its color).

So, has someone already done some work in this direction
e.g. defined a suitable sequence of colors or some other ideas?
(yes, I know palette.tex, but this is not the order of the
spectrum)

Wolfgang

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Wolfgang May E-mail: m...@informatik.uni-freiburg.de
Universitaet Freiburg http://www.informatik.uni-freiburg.de/~may/
Institut fuer Informatik D-79110 Freiburg / Germany

[Denis Girou]

>>>>> "Wolfgang.May" == Wolfgang May <m...@informatik.uni-freiburg.de> writes:

Wolfgang.May> Hi,
Wolfgang.May> is there any style/package or at least some work available for
Wolfgang.May> scanning through the spectrum of colors.

Wolfgang.May> I have an idea, for example using

Look at the HSB color model (see the color chapter of "LaTeX Graphics
Companion", specially pages 325-326).

\documentclass{article}

\usepackage[dvips]{pstcol}
\usepackage{multido}

\begin{document}

\psset{unit=5}

\begin{pspicture}(-1,-1)(1,1)
\multido{\n=0.1+0.1}{10}{%
\definecolor{MyColor}{hsb}{\n,1,1}
\pscircle[linewidth=0.1,linecolor=MyColor]{\n}}
\end{pspicture}

\end{document}

Denis Girou

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