Gnuplot

Question

我正在尝试创建一个如下所示的 3D 曲面图：

我没有绘制方程式，而是尝试以推荐的网格格式绘制 data.tsv 文件中包含的我自己的数据集。

8417    5128    4661
7284    4940    3373
5220    3597    4088

为清楚起见，上述数据的 XYZ 表示为：

rec/s   mb/s    latency
640000  1024    5220
640000  2048    3597
640000  4096    4088
320000  1024    7284
320000  2048    4940
320000  4096    3373
160000  1024    8417
160000  2048    5128
160000  4096    4661

我用来获得所需输出的 gnuplot 脚本是：

set term postscript eps enhanced color 
set output '|ps2pdf - outputfile.pdf'
set bar 1.000000 front
set style circle radius graph 0.02, first 0.00000, 0.00000 
set style ellipse size graph 0.05, 0.03, first 0.00000 angle 0 units xy
set style textbox transparent margins  1.0,  1.0 border
unset logscale
set samples 51, 51
set isosamples 21, 21
set style data lines
unset paxis 1 tics
unset paxis 2 tics
unset paxis 3 tics
unset paxis 4 tics
unset paxis 5 tics
unset paxis 6 tics
unset paxis 7 tics
set title "3D gnuplot demo" 
set xlabel "X axis" 
set xlabel  offset character -3, -2, 0 font "" textcolor lt -1 norotate
set xrange [ 160000 : 640000 ] noreverse nowriteback
set ylabel "Y axis" 
set ylabel  offset character 3, -2, 0 font "" textcolor lt -1 rotate by -270
set yrange [ 1024 : 4096 ] noreverse nowriteback
set zlabel "Z axis" 
set zlabel  offset character -5, 0, 0 font "" textcolor lt -1 norotate
set paxis 1 range [ * : * ] noreverse nowriteback
set paxis 2 range [ * : * ] noreverse nowriteback
set paxis 3 range [ * : * ] noreverse nowriteback
set paxis 4 range [ * : * ] noreverse nowriteback
set paxis 5 range [ * : * ] noreverse nowriteback
set paxis 6 range [ * : * ] noreverse nowriteback
set paxis 7 range [ * : * ] noreverse nowriteback
set colorbox vertical origin screen 0.9, 0.2, 0 size screen 0.05, 0.6, 0 front  noinvert bdefault
x = 0.0
# Last datafile plotted: "$grid"
splot 'data.tsv' using 1:2:3

但是，上面的脚本给我以下错误：

"3d.gp", line 37: warning: No usable data in this plot to auto-scale axis range

splot 'data.tsv' using 1:2:3 
                             ^
"3d.gp", line 37: All points z value undefined

Answer 1

像这样格式化 data.tsv 文件：

640000  1024    5220
640000  2048    3597
640000  4096    4088

320000  1024    7284
320000  2048    4940
320000  4096    3373

160000  1024    8417
160000  2048    5128
160000  4096    4661

并用

绘制数据

splot 'data.tsv' using 1:2:3  w l

我用最后一个 gnuplot 命令做了一个成功的测试...如果你想要更花哨的东西，我可以帮你

Gnuplot - 3D 曲面图

Gnuplot - 3D Surface Graph

drawing