[Qgis-user] AREA ATTRIBUTE FOR VECTOR LAYER

[Christine]

Ricardo Thompson wrote
> I have a polygon vector layer and want to derive an area attribute to use
> to calculate the density of schools in each polygon. Can somebody help?

Hi Ricardo,
if you have a points layer (e.g. for school locations) and a polygon layer
you may count the number of points (schools) that are located in each
polygon with: 
Menu 'Vector' > analysis tools > Count points in polygon. Choosing this
opens a dialog where you can choose your input layers (polygon and points),
an attribute name for the points count and a name and path for the new file
that is created.

Regards, Christine




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