Boundaries of the designated study area - Ipswich and Parker River Watersheds - Idrisi Raster File.


This datalayer is part of a group of layers used for research in the Ipswich River Watershed. This layer was created in July 2006 for Marine Biological Laboratory (MBL) in Woods Hole. This layer shows a mask of the Plum Island Ecosystems (PIE) study area, for use with the corresponding land use maps. This datalayer has complete information. Display study area.

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In ArcMap, towns within our study area were selected from LANDUSE and a new layer was created from this selection. Towns were selected by attribute, based on their Town_ID code. The following Town_IDs were selected: 9, 30, 31, 38, 48, 71, 92, 105, 116, 119, 144, 164, 184, 205, 206, 210, 213, 229, 246, 254, 295, 320, 298, 324, 342, and 347. The selected features were then exported as a new layer, TOWNSFROMLU.
The land use map of the study area was imported into Idrisi Kiliminjaro and converted to a raster file. After importing TOWNSFROMLU, the data base file was opened and the field TILE_NAME was exported to a raster image.
The map was reclassified so that the towns were assigned a value of 1 and the background was assigned a value of 0.
The map was updated to give a value of 1 to pixels in the following positions: (r: 344. c: 1017) and (r: 769, c: 1179). This value was assigned because these pixels were not classified in the conversion from vector to raster.
Process_Date: 200607


Information relevant to the GIS data encoding

This layer shows the extent of the Ipswich and Parker Watershed study areaHorizontal 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


Progress: Complete. Maintenance and Update Frequency: As needed. Edition: 1st
Metadata converted from MSWord documentation on 1.15.2013 by M. Hayn using "PIE_WordMetaConvert" package developed for conversion of data to EML 2.1.0 in R environment.

8/1/2019 corrected lat/long inversion for Ipswich Watershed boundary box.


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