OVERVIEW

Two layers are available that represent the graticule of latitude and longitude linework covering Massachusetts: MINLL1_ARC - 1-minute latitude-longitude lines MINLL10_ARC - 10-minute latitude-longitude lines These two layers are meant to be used for general planning, cartographic display and educational purposes.

MassGIS used Arc/Info Workstation to GENERATE lines in NAD83 Decimal-Degrees coordinates using the FISHNET option, which were then projected to the Mass. State Plane NAD83 Meters Mainland coordinate system.

The MINLL10_ARC attribute table contains these items:
 

LATITUDE		Latitude value of the line ("NA" if line is longitudinal)
LONGITUDE		Longitude value of the line ("NA" if line is latitudinal)
LINE_0		Indicates whether the line is a 00 seconds line (i.e. 44 00 00)

The MINLL1_ARC attribute table does not contain any items other than those standard in an arc attribute table.

MassGIS is maintaining these layers.

In July 2005 these layers were re-created based on the production method described above. The previous versions were created based on NAD27 coordinates and were projected to NAD83, resulting in a slight shift from the features' true locations.

Last Updated 1/14/2008
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