Changes between Version 1 and Version 2 of rfc25_fast_open


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Timestamp:
Apr 22, 2009, 11:58:49 AM (15 years ago)
Author:
warmerdam
Comment:

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  • rfc25_fast_open

    v1 v2  
    4343There is no plan to do this immediately, but the GDAL VRT driver would be a good candidate to utilize this mechanism. 
    4444
    45 In theory, it would also be desirable for MapServer to utilize this mode for tileindexed rasters - except that MapServer depends on the geotransform coming from the underlying raster file rather than coming from the raster catalog.  MapServer also assumes the color table, and nodata values will be available.
     45In theory, it would also be desirable for !MapServer to utilize this mode for tileindexed rasters - except that !MapServer depends on the geotransform coming from the underlying raster file rather than coming from the raster catalog.  !MapServer also assumes the color table, and nodata values will be available.
    4646
    4747ArcGIS is also expected to utilize this feature.
    … …  
    5858
    5959 * Potentially desirable things like ignoring .aux.xml files are not possible as they are also sometimes the source of overview information.
    60  * Potentially discarding all metadata including color tables, nodata values, and geotransforms makes this mode not useful for applications like MapServer that don't keep such information in their catalog.
     60 * Potentially discarding all metadata including color tables, nodata values, and geotransforms makes this mode not useful for applications like !MapServer that don't keep such information in their catalog.
    6161 * This RFC does not discuss a way of accelerating GDALOpen() by skipping unnecessary drivers, though that would also potentially help quite a bit.