Changes between Version 20 and Version 21 of WKTRaster/GDALDriverSpecificationWorking
- Timestamp:
- 02/17/11 14:47:14 (14 years ago)
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TabularUnified WKTRaster/GDALDriverSpecificationWorking
v20 v21 93 93 Currently, the natural block oriented r/w method is the one implemented for the driver. This is a limitation for 2 reasons: 94 94 * Obviously, it only fits one raster arrangement 95 * Each ReadBlock call forces a new server round, constructing a Box and getting the raster row that contains it. This can be really slow, in case of huge raster coverages (question raised in ticket #497 too).95 * Each !ReadBlock call forces a new server round, constructing a Box and getting the raster row that contains it. This can be really slow, in case of huge raster coverages (question raised in ticket #497 too). 96 96 97 97 '''Open question''': How to get the needed metadata in case of ONE_RASTER_PER_TABLE arrangement. As argued in ticket #497, executing ''ST_Extent'' or ''ST_Metadata'' without limits over a big table can be a really heavy process.