以下情节
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{width=7cm,compat=1.15}
\usepgfplotslibrary{patchplots}
\usepackage{filecontents}
\begin{filecontents*}{dfsa3c.dat}
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\end{filecontents*}
\begin{document}
\centering
\begin{tikzpicture}
\begin{axis}[
xlabel=$x$,
ylabel=$y$,
zlabel={$f(x,y) = x\cdot y$},
title=DFSA,
small,view={0}{90},colorbar,
]
\addplot3 [surf,
patch type=bilinear,
]
table {dfsa3c.dat};
\end{axis}
%%%%%
\begin{axis}[xshift=8cm,
xlabel=$x$,
ylabel=$y$,
title=DFSA,
small,view={0}{90},colorbar,
]
\addplot3 [surf,
shader=flat,
patch type=bilinear,patch refines,
]
table {dfsa3c.dat};
\end{axis}
\end{tikzpicture}
\end{document}
是这个问题的答案“文件中 XYZ 数据点的热图” 。
我希望得到与此类似的解决方案
我已经测试过了contour gnuplot = filled
\begin{axis}[xshift=8cm,
xlabel=$x$,
ylabel=$y$,
title=DFSA,
small,view={0}{90},colorbar,
]
\addplot3 [surf,
shader=interp, contour gnuplot = filled]
table {dfsa3c.dat};
\end{axis}
但结果并不完整，如果可能的话，我更喜欢没有等值线标签的图。
问候
答案1
免责声明：这是由一个对 gnuplots 基本一无所知的土拨鼠编写的，所以......
关掉标签很容易。更微妙的问题是如何才能得到类似 MatLab 图的东西。（我有没有提过我这辈子从来没有用过 MatLab？）
以下两个观察结果或许能有所帮助：
- 我们可以学到很多东西这个很好的答案。
- 您可以使用点元来拉伸具有多个轮廓的区域。（或者您可以使用
levels={<some appropriate list>}。）
请注意，并非所有查看器都可以看到结果，请参阅 pgfplots 手册第 162 页（阅读后我终于明白了KJO 的评论在这里，对不起@KJO！！！）
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{width=7cm,compat=1.15}
\usepgfplotslibrary{patchplots}
\usepackage{filecontents}
\begin{filecontents*}{dfsa3c.dat}
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0.72 14.5 1.
0.72 15.5 1.
0.72 16.5 1.
0.72 17.5 1.
0.72 18.5 1.
0.76 0.5 0.
0.76 1.5 0.0005
0.76 2.5 0.6215
0.76 3.5 1.
0.76 4.5 1.
0.76 5.5 1.
0.76 6.5 1.
0.76 7.5 1.
0.76 8.5 1.
0.76 9.5 1.
0.76 10.5 1.
0.76 11.5 1.
0.76 12.5 1.
0.76 13.5 1.
0.76 14.5 1.
0.76 15.5 1.
0.76 16.5 1.
0.76 17.5 1.
0.76 18.5 1.
0.8 0.5 0.
0.8 1.5 0.00175
0.8 2.5 0.7495
0.8 3.5 1.
0.8 4.5 1.
0.8 5.5 1.
0.8 6.5 1.
0.8 7.5 1.
0.8 8.5 1.
0.8 9.5 1.
0.8 10.5 1.
0.8 11.5 1.
0.8 12.5 1.
0.8 13.5 1.
0.8 14.5 1.
0.8 15.5 1.
0.8 16.5 1.
0.8 17.5 1.
0.8 18.5 1.
0.84 0.5 0.
0.84 1.5 0.004
0.84 2.5 0.873
0.84 3.5 1.
0.84 4.5 1.
0.84 5.5 1.
0.84 6.5 1.
0.84 7.5 1.
0.84 8.5 1.
0.84 9.5 1.
0.84 10.5 1.
0.84 11.5 1.
0.84 12.5 1.
0.84 13.5 1.
0.84 14.5 1.
0.84 15.5 1.
0.84 16.5 1.
0.84 17.5 1.
0.84 18.5 1.
0.88 0.5 0.
0.88 1.5 0.01825
0.88 2.5 0.94325
0.88 3.5 1.
0.88 4.5 1.
0.88 5.5 1.
0.88 6.5 1.
0.88 7.5 1.
0.88 8.5 1.
0.88 9.5 1.
0.88 10.5 1.
0.88 11.5 1.
0.88 12.5 1.
0.88 13.5 1.
0.88 14.5 1.
0.88 15.5 1.
0.88 16.5 1.
0.88 17.5 1.
0.88 18.5 1.
0.92 0.5 0.
0.92 1.5 0.07
0.92 2.5 0.988
0.92 3.5 1.
0.92 4.5 1.
0.92 5.5 1.
0.92 6.5 1.
0.92 7.5 1.
0.92 8.5 1.
0.92 9.5 1.
0.92 10.5 1.
0.92 11.5 1.
0.92 12.5 1.
0.92 13.5 1.
0.92 14.5 1.
0.92 15.5 1.
0.92 16.5 1.
0.92 17.5 1.
0.92 18.5 1.
\end{filecontents*}
\begin{document}
\centering
\begin{tikzpicture}
\begin{axis}[
xlabel=$x$,
ylabel=$y$,
zlabel={$f(x,y) = x\cdot y$},
title=DFSA,
small,view={0}{90},colorbar,
]
\addplot3 [ patch type=bilinear,
point meta={tan(3*(z-1/2)*180/pi)},
contour filled={labels=false}]
table {dfsa3c.dat};
\end{axis}
%%%%%
\begin{axis}[xshift=8cm,
xlabel=$x$,
ylabel=$y$,
title=DFSA,
small,view={0}{90},colorbar,
]
\addplot3 [surf,
shader=interp, contour gnuplot ={filled,labels=false}]
table {dfsa3c.dat};
\end{axis}
\end{tikzpicture}
\end{document}
请注意，这是使用 查看的结果的屏幕截图acroread，preview左侧图为空。（啊，如果您想按照这样的思路操作，但又对现在比例不再从 0 变为 1 感到困扰，这个问题很容易解决。）