![如何使用表格中的第三列设置情节线的颜色和宽度?](https://linux22.com/image/312623/%E5%A6%82%E4%BD%95%E4%BD%BF%E7%94%A8%E8%A1%A8%E6%A0%BC%E4%B8%AD%E7%9A%84%E7%AC%AC%E4%B8%89%E5%88%97%E8%AE%BE%E7%BD%AE%E6%83%85%E8%8A%82%E7%BA%BF%E7%9A%84%E9%A2%9C%E8%89%B2%E5%92%8C%E5%AE%BD%E5%BA%A6%EF%BC%9F.png)
我想使用表格中的第三列来对我的图进行颜色编码线例如蓝红(-1 到 1),并根据第三列的绝对值设置宽度(0 粗,1 超粗(或可能更粗))。这可能吗?
这里有一个 MWE(取自 SE 上的另一个问题,并经过简化):
\documentclass[]{article}
\usepackage{filecontents,pgfplots}
\begin{filecontents}{test.dat}
A B C
0.0000 50.0000 -1.0000
1.0000 49.9950 -0.8000
2.0000 49.9800 -0.4000
3.0000 49.9550 -0.0000
4.0000 49.9201 0.2000
5.0000 49.8752 -0.0000
6.0000 49.8204 -0.1000
7.0000 49.7556 0.0000
8.0000 49.6810 0.4000
9.0000 49.5966 0.8000
10.0000 49.5023 1.0000
\end{filecontents}
\begin{document}
\pgfplotstableread{test.dat}{\test}
\begin{tikzpicture}
\begin{axis}
\addplot [smooth, ultra thick] table [x={A}, y={B}] {\test};
\end{axis}
\end{tikzpicture}
\end{document}
答案1
这是开始的内容。该选项smooth
不可行。也许您可以借助 来解决这个问题\usepgfplotslibrary{patchplots}
;我没有。关于改变线宽的主题已处理这里。我插入了颜色图 parula(来自另一个回答我喜欢它,但你当然可以不使用它。
% arara: pdflatex
\documentclass{article}
\usepackage{filecontents,pgfplots}
\pgfplotsset{%
,compat=1.12
,colormap={parula}{%
rgb=(0.2081,0.1663,0.5292)rgb=(0.2116,0.1898,0.5777)rgb=(0.2123,0.2138,0.627)
rgb=(0.2081,0.2386,0.6771)rgb=(0.1959,0.2645,0.7279)rgb=(0.1707,0.2919,0.7792)
rgb=(0.1253,0.3242,0.8303)rgb=(0.0591,0.3598,0.8683)rgb=(0.0117,0.3875,0.882)
rgb=(0.006,0.4086,0.8828) rgb=(0.0165,0.4266,0.8786)rgb=(0.0329,0.443,0.872)
rgb=(0.0498,0.4586,0.8641)rgb=(0.0629,0.4737,0.8554)rgb=(0.0723,0.4887,0.8467)
rgb=(0.0779,0.504,0.8384) rgb=(0.0793,0.52,0.8312) rgb=(0.0749,0.5375,0.8263)
rgb=(0.0641,0.557,0.824) rgb=(0.0488,0.5772,0.8228)rgb=(0.0343,0.5966,0.8199)
rgb=(0.0265,0.6137,0.8135)rgb=(0.0239,0.6287,0.8038)rgb=(0.0231,0.6418,0.7913)
rgb=(0.0228,0.6535,0.7768)rgb=(0.0267,0.6642,0.7607)rgb=(0.0384,0.6743,0.7436)
rgb=(0.059,0.6838,0.7254) rgb=(0.0843,0.6928,0.7062)rgb=(0.1133,0.7015,0.6859)
rgb=(0.1453,0.7098,0.6646)rgb=(0.1801,0.7177,0.6424)rgb=(0.2178,0.725,0.6193)
rgb=(0.2586,0.7317,0.5954)rgb=(0.3022,0.7376,0.5712)rgb=(0.3482,0.7424,0.5473)
rgb=(0.3953,0.7459,0.5244)rgb=(0.442,0.7481,0.5033) rgb=(0.4871,0.7491,0.484)
rgb=(0.53,0.7491,0.4661) rgb=(0.5709,0.7485,0.4494)rgb=(0.6099,0.7473,0.4337)
rgb=(0.6473,0.7456,0.4188)rgb=(0.6834,0.7435,0.4044)rgb=(0.7184,0.7411,0.3905)
rgb=(0.7525,0.7384,0.3768)rgb=(0.7858,0.7356,0.3633)rgb=(0.8185,0.7327,0.3498)
rgb=(0.8507,0.7299,0.336) rgb=(0.8824,0.7274,0.3217)rgb=(0.9139,0.7258,0.3063)
rgb=(0.945,0.7261,0.2886) rgb=(0.9739,0.7314,0.2666)rgb=(0.9938,0.7455,0.2403)
rgb=(0.999,0.7653,0.2164) rgb=(0.9955,0.7861,0.1967)rgb=(0.988,0.8066,0.1794)
rgb=(0.9789,0.8271,0.1633)rgb=(0.9697,0.8481,0.1475)rgb=(0.9626,0.8705,0.1309)
rgb=(0.9589,0.8949,0.1132)rgb=(0.9598,0.9218,0.0948)rgb=(0.9661,0.9514,0.0755)
rgb=(0.9763,0.9831,0.0538)
}}
\begin{filecontents}{test.dat}
A B C
0.0000 50.0000 -1.0000
1.0000 49.9950 -0.8000
2.0000 49.9800 -0.4000
3.0000 49.9550 -0.0000
4.0000 49.9201 0.2000
5.0000 49.8752 -0.0000
6.0000 49.8204 -0.1000
7.0000 49.7556 0.0000
8.0000 49.6810 0.4000
9.0000 49.5966 0.8000
10.0000 49.5023 1.0000
\end{filecontents}
\begin{document}
\begin{tikzpicture}
\begin{axis}[%
,colorbar
,colorbar style={ylabel=C}
,xlabel=A,ylabel=B
]
\addplot [%
,mesh
,point meta=\thisrow{C}
,ultra thick
] table [x={A}, y={B}] {test.dat};
\end{axis}
\end{tikzpicture}
\end{document}