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40 lines
929 B
TeX
40 lines
929 B
TeX
\documentclass{article}
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\usepackage[pdftex,active,tightpage]{preview}
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\setlength\PreviewBorder{2mm}
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\usepackage{pgfplots}
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\begin{document}
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\begin{preview}
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\pgfplotsset{
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colormap={whitered}{
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color(0cm)=(white);
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color(1cm)=(orange!75!red)
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}
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}
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\begin{tikzpicture}
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\begin{axis}[
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colormap name=whitered,
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width=15cm,
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view={340}{25},
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enlargelimits=false,
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grid=major,
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domain=-5:5,
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y domain=-5:5,
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samples=56, %57 : TeX capacity exceeded, sorry [main memory size=3000000].
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% see also http://tex.stackexchange.com/a/7954/5645
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xlabel=$x$,
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ylabel=$y$,
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zlabel={$z$},
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colorbar,
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colorbar style={
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at={(-0.1,0)},
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anchor=south west,
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height=0.25*\pgfkeysvalueof{/pgfplots/parent axis height},
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title={$f(x,y)$}
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}
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]
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\addplot3[surf] {x^2 + y^2};
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\end{axis}
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\end{tikzpicture}
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\end{preview}
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\end{document}
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