[GRASSLIST:2387] Re: Fun with gdal - Follow-up

[Glynn Clements]

SWlab wrote:

> BTW: the resolution of each DEM is 10mx10mx0.1m. My region is defined from the 
> most northern boundary to the most southern and from most western to the most 
> eastern. Because of the slight tilts of the maps, the estearn boundary comes 
> from the SE quad map, western from NW, southern from SW, and northern from 
> NE. My grid size is 10m.
> 
> > (in GRASS the region boundaries are the outside edge of the cells, the
> > coordinates of each cell represent the center of the cell, if I recall
> > correctly)
> > Then a 30m quad would be transposed 15m north and 15m east, for example?
> 
> I was thinking about something like this. From the two options, then, which 
> one would give the smallest error ? importing directly, or reprojecting ?

If all of the DEMs use the same projection, it would be more accurate
to import them all into the same location and avoid using r.proj.

-- 
Glynn Clements <glynn.clements at virgin.net>