Changes between Version 55 and Version 56 of WKTRasterTutorial01


Ignore:
Timestamp:
Jun 14, 2010, 7:40:01 AM (12 years ago)
Author:
pracine
Comment:

Legend:

Unmodified
Added
Removed
Modified
  • WKTRasterTutorial01

    v55 v56  
    348348
    349349
    350 == Summarizing the elevation values for each buffer ==
     350== Summarizing the elevation values for each buffer and exporting the table to CSV ==
    351351
    352352The last step of our analysis is to summarize the elevation for each buffer by computing 814 weighted mean elevations. "Weighted mean elevation" means that if the area occupied by pixels with an elevation equal to 234 m is greater than the area occupy pixels with an elevation equal to 56 m, then 234 has a higher weight in the equation (proportional to it relative area).This query should do the work:
     
    361361}}}
    362362
     363Finally if you want to export the resulting table to a CSV file you can do the following command in the same pgAdmin III query window:
     364
     365{{{
     366}}}
    363367== Conclusion ==
    364368