[R-sig-Geo] Help: Merging several geotiff files

[Tomislav Hengl]

My favorite (fastest, easiest to program, most reliable) software to 
mosaic large number of geotifs are:

1. FWTools
[http://www.gdal.org/gdal_merge.html]

2. SAGA GIS
[http://www.saga-gis.org/saga_modules_doc/grid_tools/grid_tools_03.html]

Here are some examples of how to reproject, then merge large amount of 
files into a single map using the above listed tools (this script 
requires 4GB RAM to run):

[http://spatial-analyst.net/scripts/getGLCF.R]

Why don't you compare each of the tree options (raster, FWTools, SAGA) 
and then report to this community which one you prefer (following some 
objective indicators of course)?

T. Hengl
http://home.medewerker.uva.nl/t.hengl/


Zia Ahmed wrote:
> Hi,
> I have several DEM sheets as geotiff format. I like to merge/mosaic them 
> to create a  grid file  using a R-function. Help will be appreciated.
> Zia
> 
> 
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