POLYSTATS

 

Calculate statistics for each polygon in a coverage.  The statistics are: average WIDTH and LENGTH.

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POLYSTATS <cover>

 

ARGUMENTS

 

<cover> - the input polygon coverage.

 

 

NOTES

 

MBC runs from the Arc module of ArcInfo.

 

The statistics are stored in the <cover> PAT in the following items:

 

WIDTH - Average WIDTH of a polygon is approximated by the minimum dimension of the rectangle that has the same perimeter and area as does the polygon.  When the polygon is similar to a circle, then the square root of area is used instead.

LENGTH - Average LENGTH of a polygon is approximated by the maximum dimension of the rectangle that has the same perimeter and area as does the polygon.  When the polygon is similar to a circle, then the square root of area is used instead.

 

 

EXAMPLES

 

Arcplot: &run polystats

Usage: POLYSTATS <cover>

 

1)  To calculate polygon statistics for a river coverage:

 

Arc: &run polystats river_cov