[gdal-dev] What GDAL BUILDVRT utility does in case of overlapped pixels while mosaicking georeferenced images?

2013-12-05 Thread go2viena
Hi GDAL Developers: During mosaicking numerous georeferenced images using the BUILDVRT utility (http://www.gdal.org/gdalbuildvrt.html ), what this tool does in case of overlapped pixels: does it calculate mean values for all the overlapped pixels and that mean value is resulted in final

Re: [gdal-dev] What GDAL BUILDVRT utility does in case of overlapped pixels while mosaicking georeferenced images?

2013-12-05 Thread Jukka Rahkonen
go2viena at gmx.com writes: Hi GDAL Developers:   During mosaicking numerous georeferenced images using the BUILDVRT utility (http://www.gdal.org/gdalbuildvrt.html), what this tool does in case of overlapped pixels: does it calculate mean values for all the overlapped pixels and that mean

[gdal-dev] Tiling and Overviews disappear after compressing with LZW

2013-12-05 Thread Ammar
Hello list, I am new to GDAL and I have been using the utilities to process and prepare TIFF  to create a mosaic in Geoserver. I am expermineting with different compression methods and I have noticed that after compressing a file with LZW, the previously created tiles and overviews disappear!

Re: [gdal-dev] LAS support

2013-12-05 Thread Giuseppe Amatulli
Hi, just to let you know that pktools ( http://www.nongnu.org/pktools/html/index.html) in particular pklas2img support the las file to create dem. Best -- Giuseppe Amatulli, Ph.D. Center for Earth Observation ESC Room 119A Yale University P.O. Box 208109 New Haven, CT, 06520-8109 Teaching:

Re: [gdal-dev] Tiling and Overviews disappear after compressing with LZW

2013-12-05 Thread Vincent Schut
On 12/05/13 16:21, Ammar wrote: Hello list, I am new to GDAL and I have been using the utilities to process and prepare TIFF to create a mosaic in Geoserver. I am expermineting with different compression methods and I have noticed that after compressing a file with LZW, the previously

Re: [gdal-dev] Tiling and Overviews disappear after compressing with LZW

2013-12-05 Thread Vincent Schut
On 12/05/13 16:39, Vincent Schut wrote: On 12/05/13 16:21, Ammar wrote: Hello list, I am new to GDAL and I have been using the utilities to process and prepare TIFF to create a mosaic in Geoserver. I am expermineting with different compression methods and I have noticed that after

Re: [gdal-dev] Tiling and Overviews disappear after compressing with LZW

2013-12-05 Thread Jukka Rahkonen
Ammar ammar83_h at yahoo.com writes: Hello list, I am new to GDAL and I have been using the utilities to process and prepare TIFF  to create a mosaic in Geoserver. I am expermineting with different compression methods and I have noticed that after compressing a file with LZW, the