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New York City Survey Control Points 2004

Identification Information
Citation
Originator
New York City Department of Information Technology and Telecommunications
Publication Date
5/19/2004
Title
New York City Survey Control Points 2004
Geospatial Data Presentation Form
vector digital data
Series Information
Series Name
NYCMap Update 2001 - 2002
Online Linkage
https://figgy.princeton.edu/downloads/a04441c3-f392-454a-bfed-bd48c1f42ee9/file/80aabe4e-11dc-49c6-8ef2-26b5999eff2c
Abstract
The "Survey_control_point" dataset is a point representation of New York City monuments, GPS points and analytical points used for the triangulation of the New York City Base Map.
Purpose
The "Survey_control_point" has been maintained and updated as a component of the New York City basemap, known as NYCMap.
Temporal Extent
Currentness Reference
2001 - 2002
Time Instant
2001 - 2002
Bounding Box
West
-74.288371
East
-73.640692
North
40.962382
South
40.482717
Theme Keyword
Survey control point, Monument, GPS Point, Analytical Point.
Theme Keyword Thesaurus
Place Keyword
Temporal Keyword
Access Restrictions
The "Survey_control_point" dataset is available through DoITT.
Use Restrictions
The user constraints are defined by the New York City Department of Information Technology and Telecommunications.
Status
Complete
Maintenance and Update Frequency
After flyover.
Point of Contact
Contact Organization
New York City Department of Information Technology and Telecommunications.
Native Data Set Environment
Microsoft Windows Vista Version 6.0 (Build 6000) ; ESRI ArcCatalog 9.3.0.1770
Data Quality Information
Horizontal Positional Accuracy Report
All the NYCMap data was aerotriangulated and stereo-compiled to meet ASPRS Class 1 horizontal mapping standards and ASPRS vertical Class 2 accuracy specifications. The mapping standards deal with Root Mean Square (RMS) calculations that states if a random number of clearly identifiable surveyed ground control points throughout the project were compared to the mapped features, the RMS of the points would not exceed 2'. In layman's terms, 95% of the data is accurate to +/- 2'.
Quantitative Horizontal Positional Accuracy Assessment
Lineage
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
Entity point
Point and Vector Object Count
5340
Spatial Reference Information
Horizontal Coordinate System Definition
Planar
Map Projection
Map Projection Name
Lambert Conformal Conic
Lambert Conformal Conic
Standard Parallel
40.666667
Standard Parallel
41.033333
Longitude of Central Meridian
-74.000000
Latitude of Projection Origin
40.166667
False Easting
984250.000000
False Northing
0.000000
Planar Coordinate Information
Planar Coordinate Encoding Method
coordinate pair
Coordinate Representation
Abscissa Resolution
0.000000
Ordinate Resolution
0.000000
Planar Distance Units
survey feet
Geodetic Model
Horizontal Datum Name
North American Datum of 1983
Ellipsoid Name
Geodetic Reference System 80
Semi-major Axis
6378137.000000
Denominator of Flattening Ratio
298.257222
Entity and Attribute Information
Entity Type
Entity Type Label
survey_control_point
Attributes
FID
Internal feature number. (Sequential unique whole numbers that are automatically generated.)
Definition Source
ESRI
Shape
Feature geometry. (Coordinates defining the features.)
Definition Source
ESRI
SOURCE_ID
Unique persistent ID from source database.
NAME
Name of feature.
SOURCETYPE
Source of geometry "photogrammetric" or "hand digitized".
SOURCEDATE
The year of orthophotography used to update geometry.
MODIFIED
Date feature geometry is updated in NYCMap database.
FEAT_CODE
Feature code (classification) – corresponds to feature description.
FEAT_DESC
Feature description is a written explanation of the type or classification of feature.
EXPORTED
Date feature was exported from CARSI.
Distribution Information
Distributor
New York City Department of Information Technology and Telecommunications.
Name
Metadata Reference Information
Metadata Date
20081014
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
CARSI (Center for Advanced Research of Spatial Information) - Hunter College
Contact Person
Chris Santolla
Contact Position
Research Assistant
Contact Address
Address
Hunter College - North Building 10th Floor, Suite #1023-N - 695 Park Avenue .
City
New York
State or Province
New York
Postal Code
10021
Contact Voice Telephone
(212) 650-3939.
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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