Re: [mkgmap-dev] DEM-file generation from geo-tiff sources ?

Hi Frank, so these are the steps I used on my ubuntu machine: 1. Download the Copernicus Data and unzip 2. create the virtual tif-image gdalbuildvrt all.vrt *.TIF 3. cut the 1°x1° tiles with the perl script this results in almost 65GB of uncompressed tif tiles 4. convert every tif-tile to hgt us

Re: [mkgmap-dev] DEM file and the block-size option

Hi Steve, thanks, sounds great. Gerd Von: mkgmap-dev im Auftrag von Steve Ratcliffe Gesendet: Samstag, 6. Januar 2018 22:58:46 An: mkgmap-dev@lists.mkgmap.org.uk Betreff: Re: [mkgmap-dev] DEM file and the block-size option Hi Gerd > not sure what to

Re: [mkgmap-dev] DEM-file generation from geo-tiff sources ?

Hi Franco, i have seen an silly error in my area. Europa is a little bit greater ;) Just i have "$lattop = 70". The split create 3608 tif's with 4,5 GB in 85 min. gdal4hgt create 1171 zipped hgt's with 5,8 GB in 3 h :(( And then i rebuild the tif's from the hgt's in 20 min. That are 4 GB. Perha

Re: [mkgmap-dev] DEM-file generation from geo-tiff sources ?

Frank Stinner-2 wrote > Hi Franco, > > i have seen an silly error in my area. Europa is a little bit greater ;) > Just i have "$lattop = 70". The split create 3608 tif's with 4,5 GB in 85 > min. gdal4hgt create 1171 zipped hgt's with 5,8 GB in 3 h :(( > And then i rebuild the tif's from the hgt's