1. Download Protected and Recreational Open Space layer for each town in the watershed (www.state.ma.us/mgis)
2 Add each towns ‘osp(#)p1.shp file.
3. Merge individual towns layers into one complete coverage with table for all values.
4. Union open space layer with a layer of MassGIS towns.
5. Convert to grid using “status_fee” field as value.
6. Extract to IDRISI
7. Reclass back ground values from -9999 to 0.
8. Overlay with inverse mask with a value of 9 outside the study area.
9. Reclass to switch 0 and 7 values.
10. Edit Legend.
11. Save
Process_Date: June 10, 2002
Information relevant to the GIS data encoding
This layer shows the status of open space in the Ipswich WatershedHorizontal Coordinate System Name:NAD 1983 StatePlane Massachusetts Mainland FIPS 2001
Datum: D North American 1983
Reference Ellipsoid: Name: GRS 1980 Semi Axis: 6378137.0
Meridian: Greenwich
Projection Name : Lambert Conformal Conic
Number of bands : 1
Raster Origin : Lower Left
Rows : 1152
Columns : 1692
Cell Geometry :pixel