\mainlanguage[sv]
\enableregime[utf]
\usemodule[gnuplot]
\setupGNUPLOT[terminal=mp]

\startGNUPLOTscript[datatest]
set xlabel "Halloj"
set ylabel "hej"
plot 'testdata.dat'
\stopGNUPLOTscript
\starttext
\useGNUPLOTgraphic[datatest]
\stoptext