area_poly2.c File Reference

GIS Library - Planimetric polygon area calculation routines. More...

#include <grass/gis.h>

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Functions
double	G_planimetric_polygon_area (const double *x, const double *y, int n)
	Calculates planimetric polygon area. More...

Detailed Description

GIS Library - Planimetric polygon area calculation routines.

(C) 2001-2009 by the GRASS Development Team

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author

Original author CERL

Definition in file area_poly2.c.

Function Documentation

G_planimetric_polygon_area()

double G_planimetric_polygon_area	(	const double *	x,
		const double *	y,
		int	n
	)

Calculates planimetric polygon area.

Parameters

x	array of x values
y	array of y values
n	number of x,y pairs

Returns

polygon area in map units

Definition at line 25 of file area_poly2.c.

Referenced by G_area_of_polygon().