GRASS Programmer's Manual  6.4.2(2012)
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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.

Detailed Description

GIS Library - Planimetric polygon area calculation routines.

(C) 2001-2008 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:
GRASS GIS Development Team
Date:
1999-2008

Definition in file area_poly2.c.


Function Documentation

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

Calculates planimetric polygon area.

Parameters:
[in]xarray of x values
[in]yarray of y values
[in]nnumber of x,y pairs
Returns:
double

Definition at line 29 of file area_poly2.c.

Referenced by G_area_of_polygon().