AIFDR/risk_in_a_box — Issue #91: Need to be able to clip a raster by a polygon
Author: tdhu
Created: 2012-02-21 23:58:55+00:00
State: open
Labels: Highest Priority, User Requirements

With the addition of polygonal hazard layers we need the ability to clip rasters (usually of population density) by the hazard layer. Two examples of this are:
1) Jakarta flood prone areas intersecting with population density - this function would also then need to sum up the total number of people in the flood prone area
2) Volcano hazard zones intersecting with population density - again this would nee to sum up the total number of people effected (although it may also need to do this in classes as I suspect the volcano hazard layers have classes of hazard (high, medium and low)
This second example is something that Pak Sutopo would like to be able to do as it would allow for him to better appreciate the implications when he receives notification that a specific volcano's alert level has been raised.