如何在 Gnuplot 中修复“此图中没有可用数据以自动缩放轴范围”？

Question

我正在尝试创建一些数据的彩色图。我正在使用之前在类似数据集上成功使用过的脚本文件。有效的数据集具有相等的距离 Y 数据点，而我试图绘制的这个新数据集的 Y 点之间的距离越来越大，Y 范围也越来越大。这是我能找到的唯一显着差异。但是，当我尝试绘制它时，我得到了错误：

“FlareA.scr”，第 32 行：警告：此图中没有可用数据来自动缩放轴范围 “FlareA.scr”，第 32 行：z 轴范围未定义或溢出

这是我的脚本文件的样子：

set yrange [100:116]
set xrange [1:4]
set xtics 0,.5,24
set xlabel "Hour"
set ylabel "Altitude (km)"
set cbrange [4:6]
set cblabel "Density"
set palette maxcolors 256
set palette defined ( 0 "#000090",\
                      1 "#000fff",\
                      2 "#0090ff",\
                      3 "#0fffee",\
                      4 "#90ff70",\
                      5 "#ffee00",\
                      6 "#ff7000",\
                      7 "#ee0000",\
                      8 "#7f0000")

set terminal pngcairo enhanced font 'Verdana,13' size 1242,960
set output "FlareA_F.png"

set view map
set pm3d map
unset key

set title "Ne density"
splot "FlareA_F.txt" using (($1-1133)*24):2:3 with pm3d 

这是我的数据文件的示例

3133.04175  100.  5.06040859  4.51200008  4.91599989 -0.0170000009
3133.04175  104.  5.1217308  4.56899977  4.97900009  0.639999986
3133.04175  108.  5.12965775  4.62200022  4.96799994  1.14699996
3133.04175  112.  5.1110301  4.66200018  4.92000008  1.53999996
3133.04175  116.  5.07975054  4.68400002  4.85599995  1.85800004
3133.04175  124.  5.04357147  4.73799992  4.74499989  2.41700006
3133.04175  132.  5.08901501  4.84299994  4.71700001  2.9849999
3133.04175  140.  5.16615963  4.94799995  4.73799992  3.50399995
3133.04175  148.  5.23499727  5.0250001  4.75899982  3.92700005
3133.04175  156.  5.28483677  5.06400013  4.7670002  4.26300001
3133.04175  164.  5.3220067  5.07399988  4.7579999  4.53200006
3133.04175  172.  5.35366201  5.05900002  4.73400021  4.75600004
3133.04175  180.  5.38500214  5.0170002  4.69500017  4.94999981
3133.04175  188.  5.42543507  4.94700003  4.63899994  5.12799978
3133.04175  196.  5.47803974  4.8499999  4.56400013  5.28599977
3133.04175  204.  5.5400548  4.73000002  4.46899986  5.421
3133.04175  220.  5.65969706  4.46400023  4.2420001  5.61299992
3133.04175  236.  5.74195671  4.20300007  4.00199986  5.72100019
3133.04175  252.  5.7819829  3.96700001  3.76699996  5.77099991
3133.04175  268.  5.79048967  3.75500011  3.53999996  5.78399992
3133.04175  284.  5.77621031  3.56399989  3.32200003  5.77199984
3133.04175  300.  5.74792337  3.39100003  3.11199999  5.74499989
3133.04175  316.  5.70914888  3.23399997  2.91000009  5.70699978
3133.04175  332.  5.66364908  3.08999991  2.71300006  5.66200018
3133.04175  348.  5.61530399  2.95600009  2.52200007  5.61399984
3133.04175  364.  5.56505632  2.82999992  2.33500004  5.56400013
3133.04175  380.  5.51387072  2.70900011  2.15300012  5.51300001
3133.04175  396.  5.46272516  2.59100008  1.97399998  5.46199989
3133.04175  412.  5.41161013  2.47600007  1.79999995  5.41099977
3133.04175  428.  5.36251354  2.36100006  1.63  5.36199999
3133.04175  444.  5.31343365  2.24600005  1.46399999  5.3130002
3133.04175  476.  5.2203083  2.01600003  1.14900005  5.21999979
3133.04175  508.  5.13122034  1.78799999  0.856999993  5.13100004
3133.04175  548.  5.02414703  1.50999999  0.523000002  5.02400017
3133.04175  600.  4.89508963  1.171  0.135000005  4.89499998
3133.04175  700.  4.67703915  0.598999977 -0.5  4.67700005
3133.04175  800.  4.50301886  0.119999997 -1.02499998  4.50299978

3133.04517  100.  5.05211449  4.5079999  4.90600014 -0.0299999993
3133.04517  104.  5.11557293  4.56500006  4.97200012  0.626999974
3133.04517  108.  5.12465668  4.6170001  4.96299982  1.13499999
3133.04517  112.  5.10667324  4.65700006  4.91599989  1.53100002
3133.04517  116.  5.07654285  4.6789999  4.85400009  1.84899998
3133.04517  124.  5.03957796  4.73199987  4.74300003  2.40700006
3133.04517  132.  5.08425999  4.83699989  4.71400023  2.9749999
3133.04517  140.  5.16121674  4.94199991  4.73500013  3.49499989
3133.04517  148.  5.23118496  5.02099991  4.75600004  3.92000008
3133.04517  156.  5.28195047  5.06099987  4.76499987  4.2579999
3133.04517  164.  5.32028008  5.07200003  4.75699997  4.53000021
3133.04517  172.  5.35239553  5.05700016  4.73400021  4.75500011
3133.04517  180.  5.38494158  5.01599979  4.69500017  4.95100021
3133.04517  188.  5.42560816  4.9460001  4.63899994  5.12900019
3133.04517  196.  5.47885752  4.84800005  4.56400013  5.28800011
3133.04517  204.  5.54133701  4.72900009  4.46799994  5.42299986
3133.04517  220.  5.66049337  4.46299982  4.24100018  5.61399984
3133.04517  236.  5.74193859  4.20300007  4.00099993  5.72100019
3133.04517  252.  5.78100395  3.96799994  3.7650001  5.76999998
3133.04517  268.  5.78853273  3.75699997  3.53900003  5.78200006
3133.04517  284.  5.77425098  3.56800008  3.3210001  5.76999998
3133.04517  300.  5.74496603  3.39599991  3.11199999  5.7420001
3133.04517  316.  5.7051878  3.24000001  2.90899992  5.70300007
3133.04517  332.  5.66067648  3.09599996  2.71300006  5.65899992
3133.04517  348.  5.61133194  2.96300006  2.52200007  5.61000013
3133.04517  364.  5.5610795  2.83699989  2.33599997  5.55999994
3133.04517  380.  5.50989151  2.71700001  2.15300012  5.50899982
3133.04517  396.  5.45874453  2.5999999  1.97500002  5.45800018

任何关于如何解决我的问题的帮助或建议都会很棒。

Answer 1

您的 x 值超出了您定义的范围。定义的范围是 [1:4]，而您的样本数据的 x 值为 48000。

如果对于一些后来的数据点，x 值在指定范围内，也可能发生，增加的 y 值被放置这样，y 值在外面。删除 set xrange 和 set yrange 设置以进行调试。