PM3d和Impulses结合不缩放

Question

我是gnuplot的新手，但我认为我掌握了所有基础知识。我试图用一些冲动绘制一个3D表面。当我单独进行每个splot时，它们看起来很棒，但是当我将它们拼接在一起时，比例会变得混乱。有什么想法吗？在所有情况下都会设置自动缩放。

第一个splot：

splot "C:/data/file1.dat" matrix rowheaders columnheaders with pm3d

第二次剧情：

splot "C:/Data/file2.dat" with impulses, "C:/Data/file2.dat" with points pt 7

组合：

splot "C:/data/file1.dat" matrix rowheaders columnheaders with pm3d, \                                                                            
    "C:/Data/file2.dat" with impulses, \
    "C:/Data/file2.dat" with points pt 7

看看规模如何变得混乱，第一张图表被压缩到一个角落？两个数据集的数据范围大致相同。

file1.dat

    6   8   10  12  16  20  24
30  3.513999939 4.515999794 5.293000221 5.894999981 6.633999825 6.870999813 6.901000023
35  4.235000134 5.330999851 6.169000149 6.72300005  7.196000099 7.374000072 7.434000015
40  4.818999767 5.940999985 6.776000023 7.171000004 7.558000088 7.722000122 7.802999973
45  5.291999817 6.453999996 7.136000156 7.480999947 7.831999779 7.997000217 8.092000008
50  5.656000137 6.791999817 7.393000126 7.718999863 8.057999611 8.232999802 8.340000153
55  5.968999863 7.014999866 7.587999821 7.913000107 8.255000114 8.44299984  8.565999985
60  6.225999832 7.176000118 7.741000175 8.079999924 8.434000015 8.642000198 8.788000107
65  6.414000034 7.326000214 7.859000206 8.225999832 8.602000237 8.840000153 9.015000343
70  6.624000072 7.494999886 7.956999779 8.357000351 8.767000198 9.039999962 9.25
75  6.801000118 7.638999939 8.100999832 8.468000412 8.930000305 9.251999855 9.496999741
80  6.93599987  7.758999825 8.222000122 8.56799984  9.107999802 9.491000175 9.772000313
85  7.035999775 7.855000019 8.322999954 8.690999985 9.289999962 9.748999596 10.10700035
90  7.102000237 7.919000149 8.409999847 8.80300045  9.470999718 10.03199959 10.47500038
95  7.125   7.933000088 8.479000092 8.901000023 9.642999649 10.31599998 10.83600044
100 7.107999802 7.907999992 8.534000397 8.987000465 9.812000275 10.60000038 11.18799973
105 7.053999901 7.849999905 8.515999794 9.06000042  9.972999573 10.86600018 11.52400017
110 6.965000153 7.769999981 8.43500042  9.090999603 10.11800003 11.10400009 11.84200001
115 6.840000153 7.663000107 8.309000015 8.961000443 10.24100018 11.31099987 12.14299965
120 6.672999859 7.524000168 8.149999619 8.75399971  10.32299995 11.48900032 12.42500019
125 6.436999798 7.349999905 7.961999893 8.529000282 9.987000465 11.64599991 12.68999958
130 6.044000149 7.133999825 7.749000072 8.298000336 9.579000473 11.67500019 12.96199989
135 5.572000027 6.856999874 7.513000011 8.06499958  9.237999916 11.11900043 13.27099991
140 5.127999783 6.440000057 7.257999897 7.831999779 8.937999725 10.52499962 12.90999985
145 4.683000088 5.933000088 6.981999874 7.598999977 8.670000076 10.0170002  12.10299969
150 4.30700016  5.52699995  6.657999992 7.363999844 8.425999641 9.602999687 11.39599991
155 3.996999979 5.196000099 6.294000149 7.122000217 8.194000244 9.262000084 10.79100037
160 3.730999947 4.887000084 5.936999798 6.868999958 7.973999977 8.970999718 10.27600002
165 3.506999969 4.620999813 5.642000198 6.610000134 7.78000021  8.737999916 9.892000198
170 3.342999935 4.421999931 5.427999973 6.385000229 7.625   8.56499958  9.626999855
175 3.233999968 4.288000107 5.281000137 6.217000008 7.506999969 8.43900013  9.44299984
180 3.170000076 4.209000111 5.191999912 6.111000061 7.428999901 8.354000092 9.32199955

File2.DAT的

7.5 172.0   4.5
5.6 56.8    4.7
6.7 35.0    5.1
11.0    158.7   5.3
13.8    24.8    5.6
12.1    180.0   6.0
5.1 83.2    6.4
13.2    158.0   6.6
15.8    34.5    6.67
15.6    32.9    6.69
11.8    180.0   6.8
13.7    96.0    7.2
15.0    62.4    7.3
11.2    76.2    7.3
11.7    84.9    7.4
13.8    121.8   7.46
9.7 90.9    7.6
13.2    66.0    7.64
14.3    61.3    7.8
14.8    124.6   8.0
9.5 118.8   8.20
15.1    148.8   8.29
12.2    81.8    8.4

Answer 1

你可以在你的第一张图片中看到x = 10和x = 12之间的间距与x = 12和x = 16之间的间距一样大，这给出了正在发生的事情的线索：第一个情节看起来像gnuplot是使用x坐标8,10,12,16,20,24，那些实际上只是标签，而数字gnuplot使用x坐标0,1,2,3,4,5,6。因此，当您以相同的比例绘制第二个图形时，数据点的x值介于5.1和15.8之间，因此将显示pm3d曲面的一侧。

如果您希望gnuplot使用第一列和第一行作为实际坐标，则必须使用非均匀矩阵格式（请参阅help matrix nonuniform）。首先，您需要将数据文件file1.dat更改为以数字7（列数）开头。文件的开头应如下所示：

7   6   8   10  12  16  20  24
30  3.513999939 4.515999794 5.293000221 5.894999981 6.633999825 6.870999813 6.901000023
35  4.235000134 5.330999851 6.169000149 6.72300005  7.196000099 7.374000072 7.434000015

然后您可以按如下方式绘制数据：

splot "file1.dat" nonuniform matrix w pm3d, \
      "file2.dat" with impulses, \
      "file2.dat" with points pt 7