[Gnuplot-info] overlay pm3d with lines

[anyy z. <zs...@ya...>]

Hello, I want to overlay a line with pm3d. I have searched a lot in this forum and I can overlay the line over the surface plot. However, I also want the line to appear at the bottom so that it can clearly show the path. Could anyone help with that? Thanks a lot.
Shijun Zhao