[GRASS5] r.in.bin update for significant ewres/nsres differences in LatLong

[Markus Neteler]

Roger,

following your suggestion I have added a warning in r.in.bin
to check if EW and NS differ significantly (indicating that
probably east= and west= are confused).

Not sure if I am doing that right, patch below.

Markus

On Mon, Oct 18, 2004 at 02:35:27PM +0200, grass at intevation.de wrote:
> Author: markus
> 
> Update of /grassrepository/grass/src/raster/r.in.bin
> In directory doto:/tmp/cvs-serv22175
> 
> Modified Files:
> 	main.c 
> Log Message:
> added test for LatLong in case the resolution differs significantly (two ways to go around the globe in E/W direction...)
> 
> Index: main.c
> ===================================================================
> RCS file: /grassrepository/grass/src/raster/r.in.bin/main.c,v
> retrieving revision 1.14
> retrieving revision 1.15
> diff -u -d -r1.14 -r1.15
> --- main.c	18 Oct 2004 12:23:14 -0000	1.14
> +++ main.c	18 Oct 2004 12:35:25 -0000	1.15
> @@ -455,6 +455,9 @@
>  	x_s = (short *) x_v;
>  	x_c = (char *)  x_v;
>  
> +	if( cellhd.proj == PROJECTION_LL && cellhd.ew_res/cellhd.ns_res > 50. ) /* TODO: find a reasonable value */
> +		G_warning("East-West (ewres: %f) and North-South (nwres: %f) resolution differ significantly. Did you assign east= and west= correctly?", cellhd.ew_res, cellhd.ns_res);
> +
>  	fprintf(stderr, "Percent Complete: ");
>  	for (row = 0; row < grass_nrows; row++)
>  	{