This example shows how to build surface by approximating areas with constant real numbers. In this example 5 different areas were used. Suppose that for three of them (area1, area3 and area5) exact values are known, for other two (area2 and area4) - only approximative values. So, we want to build surface, which approximates as exactly as possible values for areas 1,3 and 5, and "not so exactly" for areas 2 and 4.
To produce this surface we should do the following things:
Pic 1. Surface built from areas
This result was obtained with
surfit: gridding and contouring software.