\section{Related Libraries} This section describes some libraries which come with \PGFPlots, but they are more or less special and need to be activated separately. \pgfmanualpdflabel{\textbackslash usepgfplotslibrary}{} \input pgfplots.libs.clickable.tex \input pgfplots.libs.colormaps.tex \input pgfplots.libs.dateplot.tex \input pgfplots.libs.external.tex \input pgfplots.libs.groupplot.tex \input pgfplots.libs.patchplots.tex \input pgfplots.libs.polar.tex \input pgfplots.libs.smithchart.tex \input pgfplots.libs.ternary.tex \input pgfplots.libs.units.tex