This example shows how to build surface by approximating areas with constant real numbers and how to add inequalities on resulting surface using areas. In this example 6 different areas were used. This example looks like area.tcl example, but one area (area6) with inequality was added.

See Also
area_leq, area_geq, area, area_add, completer
Here is the image of the resulting surface (green colour for areas 1,3 and 5, red colour for areas 2 and 4, magenta for area 6):

surface built from areas using inequalities

Pic 1. Surface built from areas using inequalities

This result was obtained with "examples/surfit/curvs/area_ineq.tcl" script.

surfit: gridding and contouring software.