[Gnuplot-info] pm3d map and nosurface still produces surface mesh

[Thomas P. <pfr...@ph...>]

Hello,

I try to get rid of the surface mesh but somehow fail. I am drawing a 2d 
colored map plus contour lines (that I am also using outside gnuplot 
hence the outfile). It draws the contour nicely, also the map looks 
nice, however I get a quite bright yellow grid on top of the map that I 
am not able to eliminate. I hope you can hep me. I already looked in the 
help files and also the internet but was not successful.

Thanks
Thomas

Here is my code:

unset clabel
unset key
set contour base
set cntrparam bspline
set cntrparam points 6
set cntrparam order 5
set cntrparam levels discrete 0.19

unset surface
set table 'outfile.txt'
splot "20080722_40.conv" matrix with lines
set out

set yrange[650:700]
set xrange[620:680]
set terminal png

set style line 110 lt 9 lw 0.05
set pm3d at b hidden3d 110
set palette 
defined(-0.1"black",0"violet",0.1"black",0.2"yellow",0.35"red",0.5"white")
unset hidden3d
unset surf

set output '20080722_40_c.png'
set pm3d map
splot "20080722_40.conv" matrix with line lt 5 lw 2

quit