Re: [gdal-dev] Retrieving Sub Datasets from an RPF's A.TOC file

2015-10-26 Thread Even Rouault
nt: Monday, October 26, 2015 1:28 PM > To: gdal-dev@lists.osgeo.org > Cc: Miller, Doug > Subject: Re: [gdal-dev] Retrieving Sub Datasets from an RPF's A.TOC file > > Doug, > > you might try defining the RPFTOC_FORCE_RGBA envirnoment variable/config > option to YES. This

Re: [gdal-dev] Retrieving Sub Datasets from an RPF's A.TOC file

2015-10-26 Thread Even Rouault
Doug, you might try defining the RPFTOC_FORCE_RGBA envirnoment variable/config option to YES. This should avoid GDALOpen'ing all the tiles at dataset creation. However the presence of all tiles will be checked via a 'stat' call, which can still be a potential bottleneck. That could probably be

[gdal-dev] Retrieving Sub Datasets from an RPF's A.TOC file

2015-10-26 Thread Miller, Doug
When retrieving a sub dataset from GDAL using GDALOpen() and expressing the file path as "NITF_TOC_ENTRY:CADRG_TLM50_50K_2_18:C:/rpf/a.toc " there is a considerable delay. This delay is acceptable if the RFP's coverage is for the United States, but if the coverage is for the world then it bec