Changes between Version 20 and Version 21 of PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools/document


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Timestamp:
Jul 12, 2012, 11:01:32 PM (12 years ago)
Author:
qliu
Comment:

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  • PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools/document

    v20 v21  
    6161       
    6262  '''Remarks:'''
    63    * In case source table containing only one point (constraint 1), converting source point to raster could utilize ST_AsRaster() to create a raster with the point geometry and raster specifications.
    64    * In case source table containing more than one point but the number of source points is small (constraint 5), computing distance could rescan all the source points and assign the shortest distance to the pixel being computed.
     63    * In case source table containing only one point (constraint 1), converting source point to raster could utilize ST_AsRaster() to create a raster with the point geometry and raster specifications.
     64    * In case source table containing more than one point but the number of source points is small (constraint 5), computing distance could rescan all the source points and assign the shortest distance to the pixel being computed.
    6565
    6666  '''Pros:'''