如何根据数据文件绘制网格?

如何根据数据文件绘制网格?

我想从数据文件绘制 3d 网格图。tex 文件可以运行,但其输出错误。请帮帮我。

\documentclass{article}
\usepackage{tikz, pgfplots}
\usepackage{pgfplots}
\begin{document}
% Preamble: \pgfplotsset{width=7cm,compat=1.11}
\begin{tikzpicture}
\begin{axis}
\addplot3[surf,mesh/ordering=y varies]
table {data3.txt};
\end{axis}
\end{tikzpicture}
\end{document}

我的 data.txt 文件是:

x _0 x _1 f ( x )

-8  -8  -0.0839530804864210
-8  -7.50000000000000   -0.0911518843639705
-8  -7  -0.0878605757706669
-8  -6.50000000000000   -0.0749568998790166
-8  -6  -0.0544021110889370
-8  -5.50000000000000   -0.0288090166219759
-8  -5  -0.000975520434412708
-8  -4.50000000000000   0.0265312478397611
-8  -4  0.0516786593150782
-8  -3.50000000000000   0.0731301216741631
-8  -3  0.0902658710255413
-8  -2.50000000000000   0.103089232190090
-8  -2  0.112058624112819
-8  -1.50000000000000   0.117888275348621
-8  -1  0.121354197903323
-8  -0.500000000000000  0.123130567897802
-8  0   0.123669780827923
-8  0.500000000000000   0.123130567897802
-8  1   0.121354197903323
-8  1.50000000000000    0.117888275348621
-8  2   0.112058624112819
-8  2.50000000000000    0.103089232190090
-8  3   0.0902658710255413
-8  3.50000000000000    0.0731301216741631
-8  4   0.0516786593150782
-8  4.50000000000000    0.0265312478397611
-8  5   -0.000975520434412708
-8  5.50000000000000    -0.0288090166219759
-8  6   -0.0544021110889370
-8  6.50000000000000    -0.0749568998790166
-8  7   -0.0878605757706669
-8  7.50000000000000    -0.0911518843639705
-8  8   -0.0839530804864210
-7.50000000000000   -8  -0.0911518843639705
-7.50000000000000   -7.50000000000000   -0.0872380441263558
-7.50000000000000   -7  -0.0722155593156568
-7.50000000000000   -6.50000000000000   -0.0483007953775875
-7.50000000000000   -6  -0.0186304311678548
-7.50000000000000   -5.50000000000000   0.0133240648624617
-7.50000000000000   -5  0.0443132642681921
-7.50000000000000   -4.50000000000000   0.0717446341813026
-7.50000000000000   -4  0.0939396603086459
-7.50000000000000   -3.50000000000000   0.110200370893312
-7.50000000000000   -3  0.120710483573559
-7.50000000000000   -2.50000000000000   0.126322013824795
-7.50000000000000   -2  0.128287746052329
-7.50000000000000   -1.50000000000000   0.127994384720257
-7.50000000000000   -1  0.126735087932680
-7.50000000000000   -0.500000000000000  0.125540074609490
-7.50000000000000   0   0.125066663569965
-7.50000000000000   0.500000000000000   0.125540074609490
-7.50000000000000   1   0.126735087932680
-7.50000000000000   1.50000000000000    0.127994384720257
-7.50000000000000   2   0.128287746052329
-7.50000000000000   2.50000000000000    0.126322013824795
-7.50000000000000   3   0.120710483573559
-7.50000000000000   3.50000000000000    0.110200370893312
-7.50000000000000   4   0.0939396603086459
-7.50000000000000   4.50000000000000    0.0717446341813026
-7.50000000000000   5   0.0443132642681921
-7.50000000000000   5.50000000000000    0.0133240648624617
-7.50000000000000   6   -0.0186304311678548
-7.50000000000000   6.50000000000000    -0.0483007953775875
-7.50000000000000   7   -0.0722155593156568
-7.50000000000000   7.50000000000000    -0.0872380441263558
-7.50000000000000   8   -0.0911518843639705
-7  -8  -0.0878605757706669
-7  -7.50000000000000   -0.0722155593156568
-7  -7  -0.0461727331008918
-7  -6.50000000000000   -0.0133328389927083
-7  -6  0.0221047546807415
-7  -5.50000000000000   0.0560616938398952
-7  -5  0.0851882352500579
-7  -4.50000000000000   0.107264435723081
-7  -4  0.121354197903323
-7  -3.50000000000000   0.127726140956331
-7  -3  0.127598635095563
-7  -2.50000000000000   0.122789997938240
-7  -2  0.115356136847076
-7  -1.50000000000000   0.107280034239234
-7  -1  0.100248125275867
-7  -0.500000000000000  0.0955176166614754
-7  0   0.0938552283883984
-7  0.500000000000000   0.0955176166614754
-7  1   0.100248125275867
-7  1.50000000000000    0.107280034239234
-7  2   0.115356136847076
-7  2.50000000000000    0.122789997938240
-7  3   0.127598635095563
-7  3.50000000000000    0.127726140956331
-7  4   0.121354197903323
-7  4.50000000000000    0.107264435723081
-7  5   0.0851882352500579
-7  5.50000000000000    0.0560616938398952
-7  6   0.0221047546807415
-7  6.50000000000000    -0.0133328389927083
-7  7   -0.0461727331008918
-7  7.50000000000000    -0.0722155593156568
-7  8   -0.0878605757706669
-6.50000000000000   -8  -0.0749568998790166
-6.50000000000000   -7.50000000000000   -0.0483007953775875
-6.50000000000000   -7  -0.0133328389927083
-6.50000000000000   -6.50000000000000   0.0250537444211254
-6.50000000000000   -6  0.0618458659394463
-6.50000000000000   -5.50000000000000   0.0927286223830929
-6.50000000000000   -5  0.114689470458836
-6.50000000000000   -4.50000000000000   0.126322013824795
-6.50000000000000   -4  0.127814288950322
-6.50000000000000   -3.50000000000000   0.120672778453344
-6.50000000000000   -3  0.107280034239234
-6.50000000000000   -2.50000000000000   0.0904020093590773
-6.50000000000000   -2  0.0727498464973691
-6.50000000000000   -1.50000000000000   0.0566662145166811
-6.50000000000000   -1  0.0439599289053833
-6.50000000000000   -0.500000000000000  0.0358681925771413
-6.50000000000000   0   0.0330953827827409
-6.50000000000000   0.500000000000000   0.0358681925771413
-6.50000000000000   1   0.0439599289053833
-6.50000000000000   1.50000000000000    0.0566662145166811
-6.50000000000000   2   0.0727498464973691
-6.50000000000000   2.50000000000000    0.0904020093590773
-6.50000000000000   3   0.107280034239234
-6.50000000000000   3.50000000000000    0.120672778453344
-6.50000000000000   4   0.127814288950322
-6.50000000000000   4.50000000000000    0.126322013824795
-6.50000000000000   5   0.114689470458836
-6.50000000000000   5.50000000000000    0.0927286223830929
-6.50000000000000   6   0.0618458659394463
-6.50000000000000   6.50000000000000    0.0250537444211254
-6.50000000000000   7   -0.0133328389927083
-6.50000000000000   7.50000000000000    -0.0483007953775875
-6.50000000000000   8   -0.0749568998790166
-6  -8  -0.0544021110889370
-6  -7.50000000000000   -0.0186304311678548
-6  -7  0.0221047546807415
-6  -6.50000000000000   0.0618458659394463
-6  -6  0.0951366319218348
-6  -5.50000000000000   0.117888275348621
-6  -5  0.127914465192293
-6  -4.50000000000000   0.125066663569965
-6  -4  0.110991773450039
-6  -3.50000000000000   0.0886111876940622
-6  -3  0.0614676825881785
-6  -2.50000000000000   0.0330953827827409
-6  -2  0.00653930773432966
-6  -1.50000000000000   -0.0159050880666454
-6  -1  -0.0327291525071524
-6  -0.500000000000000  -0.0430819309582111
-6  0   -0.0465692496998210
-6  0.500000000000000   -0.0430819309582111
-6  1   -0.0327291525071524
-6  1.50000000000000    -0.0159050880666454
-6  2   0.00653930773432966
-6  2.50000000000000    0.0330953827827409
-6  3   0.0614676825881785
-6  3.50000000000000    0.0886111876940622
-6  4   0.110991773450039
-6  4.50000000000000    0.125066663569965
-6  5   0.127914465192293
-6  5.50000000000000    0.117888275348621
-6  6   0.0951366319218348
-6  6.50000000000000    0.0618458659394463
-6  7   0.0221047546807415
-6  7.50000000000000    -0.0186304311678548
-6  8   -0.0544021110889370
-5.50000000000000   -8  -0.0288090166219759
-5.50000000000000   -7.50000000000000   0.0133240648624617
-5.50000000000000   -7  0.0560616938398952
-5.50000000000000   -6.50000000000000   0.0927286223830929
-5.50000000000000   -6  0.117888275348621
-5.50000000000000   -5.50000000000000   0.128195633835138
-5.50000000000000   -5  0.122789997938240
-5.50000000000000   -4.50000000000000   0.103188366871993
-5.50000000000000   -4  0.0727498464973691
-5.50000000000000   -3.50000000000000   0.0358681925771413
-5.50000000000000   -3  -0.00290539680692434
-5.50000000000000   -2.50000000000000   -0.0396120270827976
-5.50000000000000   -2  -0.0713610714107534
-5.50000000000000   -1.50000000000000   -0.0964681698772501
-5.50000000000000   -1  -0.114282728132962
-5.50000000000000   -0.500000000000000  -0.124810271468660
-5.50000000000000   0   -0.128280059194617
-5.50000000000000   0.500000000000000   -0.124810271468660
-5.50000000000000   1   -0.114282728132962
-5.50000000000000   1.50000000000000    -0.0964681698772501
-5.50000000000000   2   -0.0713610714107534
-5.50000000000000   2.50000000000000    -0.0396120270827976
-5.50000000000000   3   -0.00290539680692434
-5.50000000000000   3.50000000000000    0.0358681925771413
-5.50000000000000   4   0.0727498464973691
-5.50000000000000   4.50000000000000    0.103188366871993
-5.50000000000000   5   0.122789997938240
-5.50000000000000   5.50000000000000    0.128195633835138
-5.50000000000000   6   0.117888275348621
-5.50000000000000   6.50000000000000    0.0927286223830929
-5.50000000000000   7   0.0560616938398952
-5.50000000000000   7.50000000000000    0.0133240648624617
-5.50000000000000   8   -0.0288090166219759
-5  -8  -0.000975520434412708
-5  -7.50000000000000   0.0443132642681921
-5  -7  0.0851882352500579
-5  -6.50000000000000   0.114689470458836
-5  -6  0.127914465192293
-5  -5.50000000000000   0.122789997938240
-5  -5  0.100248125275867
-5  -4.50000000000000   0.0638070356097732
-5  -4  0.0186864368169347
-5  -3.50000000000000   -0.0293184370882879
-5  -3  -0.0749406829540772
-5  -2.50000000000000   -0.114282728132962
-5  -2  -0.145231376723941
-5  -1.50000000000000   -0.167396188095975
-5  -1  -0.181639791105078
-5  -0.500000000000000  -0.189366111683459
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-5  1.50000000000000    -0.167396188095975
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-5  2.50000000000000    -0.114282728132962
-5  3   -0.0749406829540772
-5  3.50000000000000    -0.0293184370882879
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-5  4.50000000000000    0.0638070356097732
-5  5   0.100248125275867
-5  5.50000000000000    0.122789997938240
-5  6   0.127914465192293
-5  6.50000000000000    0.114689470458836
-5  7   0.0851882352500579
-5  7.50000000000000    0.0443132642681921
-5  8   -0.000975520434412708
-4.50000000000000   -8  0.0265312478397611
-4.50000000000000   -7.50000000000000   0.0717446341813026
-4.50000000000000   -7  0.107264435723081
-4.50000000000000   -6.50000000000000   0.126322013824795
-4.50000000000000   -6  0.125066663569965
-4.50000000000000   -5.50000000000000   0.103188366871993
-4.50000000000000   -5  0.0638070356097732
-4.50000000000000   -4.50000000000000   0.0126788822191400
-4.50000000000000   -4  -0.0430819309582111
-4.50000000000000   -3.50000000000000   -0.0964681698772501
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-4.50000000000000   -2.50000000000000   -0.176131113639964
-4.50000000000000   -2  -0.198521221067370
-4.50000000000000   -1.50000000000000   -0.210717040657346
-4.50000000000000   -1  -0.215789299423374
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-4.50000000000000   0.500000000000000   -0.217106624273501
-4.50000000000000   1   -0.215789299423374
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-4.50000000000000   3   -0.141902059148217
-4.50000000000000   3.50000000000000    -0.0964681698772501
-4.50000000000000   4   -0.0430819309582111
-4.50000000000000   4.50000000000000    0.0126788822191400
-4.50000000000000   5   0.0638070356097732
-4.50000000000000   5.50000000000000    0.103188366871993
-4.50000000000000   6   0.125066663569965
-4.50000000000000   6.50000000000000    0.126322013824795
-4.50000000000000   7   0.107264435723081
-4.50000000000000   7.50000000000000    0.0717446341813026
-4.50000000000000   8   0.0265312478397611
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-4  -7  0.121354197903323
-4  -6.50000000000000   0.127814288950322
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-4  -4  -0.103622290260700
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-4  3.50000000000000    -0.154996403624724
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-3.50000000000000   -7  0.127726140956331
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-3.50000000000000   -4.50000000000000   -0.0964681698772501
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-3  6.50000000000000    0.107280034239234
-3  7   0.127598635095563
-3  7.50000000000000    0.120710483573559
-3  8   0.0902658710255413
-2.50000000000000   -8  0.103089232190090
-2.50000000000000   -7.50000000000000   0.126322013824795
-2.50000000000000   -7  0.122789997938240
-2.50000000000000   -6.50000000000000   0.0904020093590773
-2.50000000000000   -6  0.0330953827827409
-2.50000000000000   -5.50000000000000   -0.0396120270827976
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-2.50000000000000   -1  0.161211074964765
-2.50000000000000   -0.500000000000000  0.218901134610391
-2.50000000000000   0   0.239388857641583
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-2.50000000000000   4.50000000000000    -0.176131113639964
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-2.50000000000000   5.50000000000000    -0.0396120270827976
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-2.50000000000000   6.50000000000000    0.0904020093590773
-2.50000000000000   7   0.122789997938240
-2.50000000000000   7.50000000000000    0.126322013824795
-2.50000000000000   8   0.103089232190090
-2  -8  0.112058624112819
-2  -7.50000000000000   0.128287746052329
-2  -7  0.115356136847076
-2  -6.50000000000000   0.0727498464973691
-2  -6  0.00653930773432966
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-2  -5  -0.145231376723941
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-1.50000000000000   -8  0.117888275348621
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-1.50000000000000   -7  0.107280034239234
-1.50000000000000   -6.50000000000000   0.0566662145166811
-1.50000000000000   -6  -0.0159050880666454
-1.50000000000000   -5.50000000000000   -0.0964681698772501
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-1.50000000000000   4   -0.211747732782194
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-1.50000000000000   5   -0.167396188095975
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-1.50000000000000   6   -0.0159050880666454
-1.50000000000000   6.50000000000000    0.0566662145166811
-1.50000000000000   7   0.107280034239234
-1.50000000000000   7.50000000000000    0.127994384720257
-1.50000000000000   8   0.117888275348621
-1  -8  0.121354197903323
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-1  -6.50000000000000   0.0439599289053833
-1  -6  -0.0327291525071524
-1  -5.50000000000000   -0.114282728132962
-1  -5  -0.181639791105078
-1  -4.50000000000000   -0.215789299423374
-1  -4  -0.201629367435613
-1  -3.50000000000000   -0.131337442163653
-1  -3  -0.00654070696893884
-1  -2.50000000000000   0.161211074964765
-1  -2  0.351844907875699
-1  -1.50000000000000   0.539841580545523
-1  -1  0.698455998636608
-1  -0.500000000000000  0.804306627215558
-1  0   0.841470984807896
-1  0.500000000000000   0.804306627215558
-1  1   0.698455998636608
-1  1.50000000000000    0.539841580545523
-1  2   0.351844907875699
-1  2.50000000000000    0.161211074964765
-1  3   -0.00654070696893884
-1  3.50000000000000    -0.131337442163653
-1  4   -0.201629367435613
-1  4.50000000000000    -0.215789299423374
-1  5   -0.181639791105078
-1  5.50000000000000    -0.114282728132962
-1  6   -0.0327291525071524
-1  6.50000000000000    0.0439599289053833
-1  7   0.100248125275867
-1  7.50000000000000    0.126735087932680
-1  8   0.121354197903323

答案1

PGFPlots 需要知道您的图表有多少行和多少列,但它无法根据您提供的格式推断出来。您需要在数据块之间引入一个空白行,或者使用以下方式手动指定列数mesh/cols=15

\documentclass{article}
\usepackage{tikz, pgfplots}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}
\addplot3[surf, mesh/ordering=y varies, mesh/cols=15]
    table {
x y z
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-8  -5.50000000000000   -0.0288090166219759
-8  -5  -0.000975520434412708
-8  -4.50000000000000   0.0265312478397611
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-8  -3.50000000000000   0.0731301216741631
-8  -3  0.0902658710255413
-8  -2.50000000000000   0.103089232190090
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-8  7   -0.0878605757706669
-8  7.50000000000000    -0.0911518843639705
-8  8   -0.0839530804864210

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-7.50000000000000   -7  -0.0722155593156568
-7.50000000000000   -6.50000000000000   -0.0483007953775875
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\end{document}

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