gnuplot 3D plot

概要

出力
for z=0,2{
for y=0,2{
for x=0,2{
write() x, y ,z, x+y+z
}}}なるデータファイル

data.csv

# x, y, z, f(x,y,z)=x+y+z
# 1st black Z=0
# 1st set
0, 0, 0, 0 #1st line
1, 0, 0, 1 #2nd line
2, 0, 0, 2 #3rd line

# 2nd set
0, 1, 0, 1
1, 1, 0, 2
2, 1, 0, 3

# 3rd set 
0, 2, 0, 2
1, 2, 0, 3
2, 2, 0, 4


# 2nd block Z=1
0, 0, 1, 1
1, 0, 1, 2
2, 0, 1, 3

0, 1, 1, 2
1, 1, 1, 3
2, 1, 1, 4

0, 2, 1, 3
1, 2, 1, 4
2, 2, 1, 5


# 3rd block Z=2
0, 0, 2, 2
1, 0, 2, 3
2, 0, 2, 4

0, 1, 2, 3
1, 1, 2, 4
2, 1, 2, 4

0, 2, 2, 4
1, 2, 2, 5
2, 2, 2, 6

３次元plotする

sp "data.csv" with pm3d

特定の断面表示する

u ($1==0 ? $1: 1/0):2:3 もしく はeveryを使う．

実際的なサンプルコード例

3d.gp

# !/user/bin/gnuplot

# set pm3d
# set pm3d map
set ticslevel 0
# set cbrange[20:120]
set palette define (20 "blue", 60 "white", 120 "red")
# set palette define (0 "navy",1 "blue",2 "dark-violet",3 "red",4 "yellow")

set palette rgbformulae 22, 13, -31
# set palette define (20 "white", 100 "red")
# set grid
set xtics  0.01 font "Times,10" offset 0,-1,0
set ytics  0.01 font "Times,10" offset 1,0,0
set ztics  0.01 font "Times,10" offset 0,0,0
set size ratio 1.0
set key left below

set cblabel "{/Times-New-Roman=10 Temp [℃]}"
set xlabel "{/Times-New-Roman=10 X [M]" offset 0,-1,0
set ylabel "{/Times-New-Roman=10 Y [M]" offset 1,0,0
set zlabel "{/Times-New-Roman=10 Z [M]" offset 0,0,0
set view equal xyz
set cbtics 10 font "Times,10" offset 1,0,0
# set colorbox  user origin 0,0

set format cb "%.2f"


splot for [j=0:100:5] "result/result_05_0.020.txt" every ::: (j*201+0) :: (j*201+200) with pm3d not


set arrow from 0.00,0.00,0.00 to 0.04,0.00,0.00 nohead lw 1 lc black front
set arrow from 0.00,0.04,0.00 to 0.04,0.04,0.00 nohead lw 1 lc black front
set arrow from 0.00,0.00,0.04 to 0.04,0.00,0.04 nohead lw 1 lc black front
set arrow from 0.00,0.04,0.04 to 0.04,0.04,0.04 nohead lw 1 lc black front

set arrow from 0.00,0.00,0.00 to 0.00,0.00,0.04 nohead lw 1 lc black front
set arrow from 0.04,0.00,0.00 to 0.04,0.00,0.04 nohead lw 1 lc black front
set arrow from 0.04,0.04,0.00 to 0.04,0.04,0.04 nohead lw 1 lc black front
set arrow from 0.00,0.04,0.00 to 0.00,0.04,0.04 nohead lw 1 lc black front

set arrow from 0.00,0.00,0.04 to 0.00,0.04,0.04 nohead lw 1 lc black front
set arrow from 0.04,0.00,0.04 to 0.04,0.04,0.04 nohead lw 1 lc black front
set arrow from 0.04,0.00,0.00 to 0.04,0.04,0.00 nohead lw 1 lc black front
set arrow from 0.00,0.00,0.00 to 0.00,0.04,0.00 nohead lw 1 lc black front