[Plplot-general] contour plot question

[<WH...@bf...>]

hi list,
i am looking for a way to plot isolines. so far i understand
is the way plpoin3(). therefor you need z[x][y]. the problem
is i have data for x=0...6000,y=0...9000. a simple field would
become very expensive exspecialy if i have only 2500 point in total (uneven distributed).

Is there a way to plot a "3D field" like plploin(N,x,y,z) ?

regards,
walter