GRASS GIS 7 Programmer's Manual  7.5.svn(2017)-r71769
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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. 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

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

Calculates planimetric polygon area.

Parameters
xarray of x values
yarray of y values
nnumber 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().