Changes between Version 22 and Version 23 of PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools/document

Timestamp:

Jul 12, 2012, 11:03:24 PM (12 years ago)

Author:

qliu

Comment:

—

PostGIS_Raster_SoC_Idea_2012/Distance_Analysis_Tools/document

@@ -70 +70 @@
  * Producing an intermediate raster is costly if the requested raster resolution is very high (constraint 3, 5b & 5d). 
  * ST_Union could be very inefficient at producing the required raster from a large set of geometries and there is no efficient method to produce such a raster right now in PostGIS (constraints 1, 5c & 5d). 
- * It could be very inefficient to rescan all the source points to find the one nearest to the current pixel (constraint 6, 7, 8 & 12). We still have to see how GRASS does this efficiently.
+ * It could be very inefficient to rescan all the source points to find the one nearest to the current pixel (constraint 6, 7, 8 & 12). {{{We still have to see how GRASS does this efficiently.}}}
  * Only rasters which extent contains all the source points could be produced.
  * This approach does not answer well to the requirement of developing a generic reusable solution for more interpolation needs (constraint 7).