我正在绘制一个热图，其数据范围为0-60度，r轴为0-1。我有步骤5的角度0-60的数据，但不是所有的r轴数据都是1，所以图像中所示的图形剂量填充该区域，我试图使用dgrid3d但是它给出了一个正方形而不是一个派。我试图使用表，但它给出相同的输出。无论如何要解决这个问题 The image with dgrid3d
reset
set term pngcairo enhanced size 800,800
set output 'polar.png'
set angles degrees
set multiplot
set lmargin at screen 0.1
set tmargin at screen 0.9
set rmargin at screen 0.9
set bmargin at screen 0.1
set samples 1000
unset border
set pm3d interpolate 10,10
set pm3d map
unset key
#set dgrid3d #20,20
unset xtics
unset ytics
# plot the heatmap
set parametric
set isosamples 15
set style data lines
set yrange[0:1]
set xrange[0:1]
set colorbox user origin 0.9,0.1 size 0.03,0.8
set dgrid3d
#set mapping spherical
splot 'file2' u 1:2:3 w pm3d
#splot 'file' u ($2*cos($1)):($2*sin($1)):3 w pm3d
unset parametric
R_max = 1
dR = 0.2
phi_max = 60.
dphi = 15
set xr [0:R_max]
set yr [0:R_max]
set xtics out nomirror
unset ytics
set style line 42 lc rgb '#666666' dt 3
unset key
plot \
for [i=0:phi_max/dphi] (x>=0&&x<=R_max*cos(i*dphi))?tan(i*dphi)*x:1/0 w l ls 42
set polar
set trange [0:phi_max]
unset raxis
unset rtics
plot \
for [i=1:ceil(R_max/dR)] i*dR<=R_max?i*dR:1/0 w l ls 42
unset raxis
unset rtics
#plot cos(t) w l lw 2 lc rgb 'dark-red'
unset polar
unset multiplot
数据 这个数据是极性的，我在我的代码（file2）中使用的是笛卡儿。
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