[gdal-dev] LZW Compression on geotiffs

2014-10-01 Thread Stephen Roecker
I've also been toying with the compression settings lately and thought I would mention my experience. I'm not sure if this is known behavior, but when subsequently using the compressed rasters with 'gdaldem' I got some strange results when the raster was greater than 4GB (i.e. BIGTIFF). The resulti

Re: [gdal-dev] Fwd: gdalwarp -r average bug?

2014-09-29 Thread Stephen Roecker
, Sep 25, 2014 at 10:13 AM, Kyle Shannon wrote: > On Thu, Sep 25, 2014 at 8:10 AM, Kyle Shannon wrote: >> Stephen, >> >> On Wed, Sep 24, 2014 at 2:21 PM, Stephen Roecker >> wrote: >>> Out of curiousity the other day I compared the results of gdalwarp (-r >&g

[gdal-dev] Fwd: gdalwarp -r average bug?

2014-09-24 Thread Stephen Roecker
Out of curiousity the other day I compared the results of gdalwarp (-r average) against the raster R package aggregate(fun=mean) function for aggregating a raster to a coarser resolution. I was suprized how different the results of gdalwarp were from raster. When zooming in and manually averaging