Main Page/Research/Fragstats

Making a raster from parcels

1. Make a table from land use code 102
2. Assign each 102 land use a general classification type ("luclass") and unique number ("lunum")
3. Create a shape table of parcels with PIN
4. Create a PARCEL_EXTR table with PIN and PRESENTUSE
5. Join to create a table with fields

   shape, PIN, presentuse, luclass, lunum

6. Calculate luclass="water" where MINOR="HYDR"
7. Calculate lunum=100 where MINOR="HYDR"
8. Calculate lunum=200 where lunum is null
9. Convert polygon to raster, name = parcel_grid_0 (intermediate)

   10 m cell = 32.808 ft

   field = lunum

10. Calculate raster, make null values = 300

    con(isnull([parcel_10m]), 300, [parcel_10m])

11. Make permanent, "parcel_10m"

Constants:

• 1 m = 3.2808 ft
• 10 m = 32.808 ft
• 100 m = 328.08 ft