Tagged Questions

1
vote
1answer
100 views

Summarize polygon area using another polygon

I have a shapefile representing public/private lands in Montana. This is a multipart shapefile where I've simplified attributes so that #1==private and #0==public. Next I have a shapefile of ...
0
votes
0answers
126 views

Overlay polygon layer A over Polygon layer B

If I overlay postal codes (Zip Codes in US) over census tracts where postal codes are usually larger than census tracts, how can I get a table of what percentage of the area of the census tracts are ...
1
vote
2answers
240 views

count features in polygon shapefile A that fall within each feature of polygon shapefile B

I have two polygon shapefiles, each of which contain multiple (possibly overlapping) polygons. Is there some way, using GRASS, to calculate the number of polygons belonging to shapefile A that fall ...
3
votes
3answers
566 views

Overlay polygons on raster colour map to extract area values for each colour within each polygon

Does anyone know an answer to the following: I have a set of polygons created as the MCP of animal movements. I also have a habitat colour map raster, with 13 different habitat types as different ...