Changes between Version 27 and Version 28 of WKTRasterTutorial01


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Timestamp:
Jun 11, 2010, 8:55:02 AM (12 years ago)
Author:
pracine
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  • WKTRasterTutorial01

    v27 v28  
    100100The -k option specify the size of the tiles we want to load in PostGIS. Every input raster will be splitted into 100x100 tiles. This dimension is a good compromise allowing efficient raster/vector analysis. It is better if the size of the tiles is a divider of size of each raster. Otherwise the last colomns and rows of tiles from each raster will be filled with nodata values. This might have an impact on performance but not on the result since WKT Raster analysis functions ignore nodata values.
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    102 The -I option tells the loader to create a spatial index on the raster tile table. If you forget to add this option you can always add the index by executing a SQL command similar to this one:
     102The -I option tells the loader to create a spatial index on the raster tile table. If you forget to add this option you can always add the index by executing a SQL command similar to this one in pgAdmin III:
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    104104{{{