[Tex/LaTex] How to define more color commands properly for \pslegend in pst-plot

colorpst-plotpstricks

I am plotting a multi-curve graph by using pst-plot, and naturally need different color to label each curve in legend, by using \pslegend command. However, I find I can only use a number of pre-defined color commands

\red \blue \black \green \cyan \yellow \gray % ...may be more

When I looked into the pstricks package documentation and tried to define my own color command

\newrgbcolor{myorg}{255 165 0} % trying to define a orange color command

however, it does not work, here is an MWE (compile by using xelatex, Windows 64-bit, TeX Live 2015)

% !TEX program = xelatex
\documentclass[border = 1.2cm]{standalone}

\usepackage{pstricks-add}
\newrgbcolor{myorg}{255 165 0}

\begin{document}

\pslegend[rt]{ \myorg\rule[1ex]{2em}{1pt} & Line 1) }
\begin{psgraph}(0,0)(5,5){10cm}{8cm}
\end{psgraph}

\end{document}

The color is exactly like using \yellow.

How can I define a color command properly (for the use of \pslegend in pst-plot), and where am I able to look up all the pre-defined color commands in pstricks (can't find a list of color commands in both pstricks and pst-plot package documents)?

Best Answer

pstricks loads the xcolor package. If you want a broader choice, pass the option, say, x11names to xcolor (via \documentclass). This option gives access to nearly 320 predefined colours. See § 4, Colors by Names, pp38–40 of the documentation. You also can use the option svgnames which more or less the same as HTML colour names.

Example:

\documentclass[x11names, border = 1.2cm]{standalone}

\usepackage{pstricks-add}

\begin{document}

\pslegend[rt]{ \color{SeaGreen3}\rule[0.5ex]{2em}{1pt} & Line 1) }
\begin{psgraph}(0,0)(5,5){10cm}{8cm}
\end{psgraph}

\end{document}

Related Solutions

[Tex/LaTex] Define a color for \title, \address and \phone commands of a CV

The colors of moderncv are controlled by color0, color1 and color2 (the last one being used for the elements you mention). You can redefine these as you like (example for cyan):

\definecolor{color2}{RGB}{0,255,255}

Some predefined settings can be loaded through \moderncvcolor:

\moderncvcolor{blue}

where the argument can be blue, orange, green, red, purple, grey or black.

Finally, you could also use directly \textcolor in the argument of any moderncv command other than \email:

\phone{\textcolor{red}{123 456 7890}}

[Tex/LaTex] How to color certain commands/environments

Update below: one way to deal with \intertext in this method.

Normally \everymath only regards inline, and there is \everydisplay for display math. But amsmath typesets things in a, hmm, complicated way. In particular using \everydisplay to add a \color command seems difficult (it works when amsmath is not loaded). Anyway, here is a work-around:

\documentclass{article}
\usepackage{amsmath}
\usepackage{color}
\usepackage{etoolbox}

\makeatletter
\AtBeginEnvironment{align*}{\let\SetColor\@gobble \color{display}}
\AtBeginEnvironment{align}{\let\SetColor\@gobble \color{display}}
\AtBeginEnvironment{equation*}{\let\SetColor\@gobble \color{display}}
\AtBeginEnvironment{equation}{\let\SetColor\@gobble \color{display}}
\makeatother

% maybe some other nice package has set-up things in \everymath!

\everymath\expandafter{\the\everymath\SetColor{inline}}

\definecolor{display}{rgb}{0,1,0}
\definecolor{inline}{rgb}{0,0,1}

\let\SetColor\color

\begin{document}

$xyz$

\begin{align*}
  E &= mc^2\\
  x^n+y^n&= z^n
\end{align*}

$$hello $$ %% for this we would need \everydisplay
%% but some interference with amsmath makes its use
%% a bit delicate.

\begin{equation}
  E = mc^2
\end{equation}

\end{document}

Output:

colored math

Update: adding to the code above in the preamble

\everydisplay\expandafter{\the\everydisplay\SetColor{display}}

will make the displayed hello also green. Note though that with amsmath this works only because its environments have been patched here to annihilate \SetColor. With amsmath, \everydisplay {\color{green}} causes an error. So here in align* the \SetColor does not do anything and it is the \color inserted at the begin of the environment which sets the color.

To deal with \intertext. One possibility.

\documentclass{article}
\usepackage{color}
\usepackage{amsmath}
\usepackage{etoolbox}

\makeatletter
\AtBeginEnvironment{align*}{\let\SetColor\@gobble \color{display}%
                            \Patchintertext}
\AtBeginEnvironment{align}{\let\SetColor\@gobble \color{display}\Patchintertext}
\AtBeginEnvironment{equation*}{\let\SetColor\@gobble \color{display}}
\AtBeginEnvironment{equation}{\let\SetColor\@gobble \color{display}}

\def\Patchintertext{\let\oldintertext@\intertext@
                    \def\intertext@{\oldintertext@\Patchintertext@}}
\def\Patchintertext@ {\let\oldintertext\intertext
                      \def\intertext ##1{\oldintertext
                      {\color{black}\let\SetColor\color ##1}}}
\makeatother


\everymath\expandafter{\the\everymath\SetColor{inline}}
\everydisplay\expandafter{\the\everydisplay\SetColor{display}}

\definecolor{display}{rgb}{.6,.6,.2}
\definecolor{inline}{rgb}{0,0,1}

\let\SetColor\color

\begin{document}

here is some text before with $xyz$ math inline,
\begin{align*}
  E &= mc^2\\
\intertext {this is some intertext with math $a^n+b^n=c^n$ inside,}
  x^n+y^n&= z^n\quad \text{(display)}
\end{align*}
and here is some more text after with again $A^B$ math inline.

$$this is some standard math display$$ 

\begin{equation}
  E = mc^2
\end{equation}

\end{document}

color certain B

Best Answer

Related Solutions

[Tex/LaTex] Define a color for \title, \address and \phone commands of a CV

[Tex/LaTex] How to color certain commands/environments

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