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Cambridge Minor Transportation Lines

Identification Information
Citation
Originator
City of Cambridge Geographic Information System (CGIS)
Publication Date
1999
Title
Cambridge Minor Transportation Lines
Geospatial Data Presentation Form
vector digital data
Publication Information
Publication Place
Cambridge, MA.
Publisher
City of Cambridge
Online Linkage
https://hgl.harvard.edu/catalog/harvard-cammintrans
Abstract
This map data layer represents various features (sidewalks, footpaths, driveways) described as minor transporation lines in the City of Cambridge, Massachusetts.
Purpose
This layer is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. This layer will provide a basemap for layers related to transportation and more advanced user applications may focus on urban planning and policy-making, public works, or utilities purposes (including defining boundaries, managing assets and facilities, integrating attribute databases with geographic features, spatial analysis, and presentation output.)
Temporal Extent
Currentness Reference
publication date
Time Instant
19990527
Bounding Box
West
-71.161476
East
-71.063777
North
42.404659
South
42.353336
ISO Topic Category
transportation
Theme Keyword
Municipal
Theme Keyword Thesaurus
HGL Category Keyword Thesaurus
Theme Keyword
Transportation
Trails
Sidewalks
Driveways
Streets
Theme Keyword Thesaurus
LCSH
Theme Keyword
Minor Transportation
Theme Keyword Thesaurus
None
Place Keyword
Cambridge
Massachusetts
Place Keyword Thesaurus
GNIS
Temporal Keyword
Access Restrictions
Access is granted to licensee (Harvard University) only. Available only to Harvard University affiliates.
Use Restrictions
For educational non-commercial use only. The City of Cambridge makes no claims, no representations, and no warranties, express or implied, concerning the validity (express or implied), the reliability or the accuracy of the GIS data and GIS data products furnished by the City, including the implied validity of any uses of such data
Status
Complete
Maintenance and Update Frequency
Unknown
Point of Contact
Contact Organization
City of Cambridge Management Information Systems
Delivery Point
831 Massachusetts Ave
Delivery Point
2nd Floor
City
Cambridge
State
MA
Postal Code
02139
Country
USA
Contact Telephone
(617) 349-4140
Contact Facsimile Telephone
(617) 349-6165
Contact Electronic Mail Address
gis@ci.cambridge.ma.us
Hours of Service
Monday through Friday 8:30 A.M. to 5:00 P.M. EST-USA
Credit
GIS data supplied by City of Cambridge GIS.
Native Data Set Environment
Microsoft Windows NT Version 4.0 (Build 1381) Service Pack 6; ESRI ArcCatalog 8.2.0.700
Data Quality Information
Attribute Accuracy Report
Back of sidewalk is only captured for those areas where the sidewalk edge is not coincident with a building roofline.
Horizontal Positional Accuracy Report
Color aerial photography at a scale of 1" = 400' was captured on March 29, 1995 for the subsequent development of base map data. Forward lap was 80% 2%. Sidelap was a minimum of 30% . Crab was less than 3 degrees when measured with respect to any two successive exposures. Planimetric data is compiled in accordance with the ASPRS Accuracy Standards for Large-Scale Class 1 maps. This means that the limiting RMS error for all well defined points shall be 1.0' on the ground. Control Points: The plotted position of each control point shall lie to an accuracy of one-hundredth (1/100) of an inch of its true position, as expressed by the State Plane coordinate for that point.
Lineage
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
String
Point and Vector Object Count
44666
Spatial Reference Information
Horizontal Coordinate System Definition
Geographic
Latitude Resolution
0.000000
Longitude Resolution
0.000000
Geographic Coordinate Units
Decimal degrees
Geodetic Model
Horizontal Datum Name
D_WGS_1984
Ellipsoid Name
WGS_1984
Semi-major Axis
6378137.000000
Denominator of Flattening Ratio
298.257224
Vertical Coordinate System Definition
Altitude System Definition
Altitude Datum Name
North American Vertical Datum of 1988
Altitude Resolution
1.000000
Altitude Encoding Method
Explicit elevation coordinate included with horizontal coordinates
Entity and Attribute Information
Entity Type
Entity Type Label
Minor Transportation Features
Entity Type Definition
Lines Represent driveways, sidewalks, footpaths
Entity Type Definition Source
CGIS
Attributes
FNODE_
Internal node number for the beginning of an arc (From-node)
Definition Source
CGIS
TNODE_
Internal node number for the end of an arc (To-node)
Definition Source
CGIS
LPOLY_
Internal number left polygon
Definition Source
CGIS
RPOLY_
Internal number right polygon
Definition Source
CGIS
LENGTH
Feature length in map units
Definition Source
Computed
MINTRANS_
Numeric Feature Identifier
Definition Source
ESRI, CGIS
MINTRANS_I
Numeric Feature Identifier
Definition Source
CGIS
MIT_LNCODE
Numeric Feature Type Code
30
Back edge of sidewalk
31
Sidewalk segment
40
Public footpath
50
Edge of driveway
Definition Source
CGIS
SHAPE
Feature geometry. (Coordinates defining the features.)
Definition Source
ESRI
SHAPE.LEN
Feature length in map units
Definition Source
Computed
SHAPE.FID
Internal feature number. (Sequential unique whole numbers that are automatically generated.)
Definition Source
ESRI
Distribution Information
Format Name
Shape
Distributor
Harvard Geospatial Library
Name
Metadata Reference Information
Metadata Date
20030917
Metadata Contact
Contact Information
Contact Person Primary
Contact Person
Contact Organization
Harvard Geospatial Library
Contact Address
Address
Harvard University Library
Address
Office For Information Systems
Address
1280 Massachusetts Avenue
City
Cambridge
State or Province
MA.
Postal Code
02138
Country
USA
Contact Voice Telephone
617-495-2417
Contact Facsimile Telephone
617-496-0440
Contact Electronic Mail Address
hgl_ref@hulmail.harvard.edu
Metadata Standard Name
FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version
FGDC-STD-001-1998
Metadata Extensions
Online Linkage
http://www.esri.com/metadata/esriprof80.html
Profile Name
ESRI Metadata Profile
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