NAME

RrowCol2Coords - compute true world co-ordinate from row, column index

SYNOPSIS

#include "csf.h"

int RrowCol2Coords
(
	const MAP *m,
	double row,
	double col,
	double *x,
	double *y
);

PARAMETERS

const MAP *m
map handle
double row
Row number (relates to y position).
double col
Column number (relates to x position).
double *x
write-only. x co-ordinate
double *y
write-only. y co-ordinate

DESCRIPTION

RasterRowCol2Coords computes the true world co-ordinate from a row, column index. The row,column co-ordinate can be fractions. For example (row,col) = (0.5,0.5) computes the (x,y) co-ordinate of the centre of the upper left pixel. Secondly, the row and column co-ordinate don't have to be on the map. They are just relative to upper left position. For example (row,col) = (-0.5,0.5) computes the (x,y) co-ordinate of the centre of the pixel that is right above upper left pixel.

RETURNS

0 if the co-ordinate is outside the map. 1 if inside. -1 in case of an error.

MERRNO

ILL_CELLSIZE

SEE ALSO

RgetCoords , RasterRowCol2Coords