Reduce distance between points in splot

Question

I have this gnuplot script

reset
set palette model RGB defined (0 \"gray\", 0.1 \"white\", 0.33 \"yellow\", 0.66 \"orange\", 1 \"red\")
set xlabel \"x\"
set          


        

Answer 1

I usually go with the options

set pm3d map
plot file_name u 1:2:5:xtic(3):ytic(4) with image

for gridded data (it makes a smaller file if you use vector formats). I suspect your problem may be to do with the fact that you specify a point style and size for your splot. So, you could try setting the pm3d map option and using splot without the point specification, or plot ... with image.