The District of Columbia

DCGIS_HeritageTrailPt

DCGIS_HeritageTrailPt

by Cultural Tourism DC on 20111105

Keywords
About: Culture, Historic, Tourism
Taking place at: Washington, D.C., District of Columbia, DC, DC GIS, DCGIS

Abstract

Hertiage Trail Plaque locations. The dataset contains locations and attributes of Heritage Trail Plaques, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies.

All DC GIS data is stored and exported in Maryland State Plane coordinates NAD 83 meters.

METADATA CONTENT IS IN PROCESS OF VALIDATION AND SUBJECT TO CHANGE.

Purpose

This data is used for the planning and management of Washington, D.C. by local government agencies.

Use constraints

Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Point of contact

GIS Data Coordinator
in Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: 202-727-5660
hours: 9am - 5pm

Credits

Cultural Tourism DC

Data accuracy

Accuracy
Validated by Office of CHief Technology Officer staff and summer youth. Data was compiled, qc'd (daily), and finalized into two layers: heritage trail points and lines.

Logical consistency
Validated by source and/or responsible agency

Completeness
Validated by source and/or responsible agency

Horizontal positional accuracy
Plaques were generally located using Trimble GPS units next to the front of the Plaque (within a foot). In some cases, they were located in the street ROW to acquire 3 satellites (up to 15 feet off).

Vertical positional accuracy
N/A

Lineage / Sources

  • Heritage Trails
    paper, location and attributes
    Heritage Trail Brochures
    by Cultural Tourism DC, 20111105
Lineage / Processes
GIS Data Coordinator
in Office of the Chief Technology Officer

441 4th st NW, Suite 930 South
Washington DC, 20001, USA

fax: 202-727-5660
hours: 9am - 5pm
Staff established a set up file for the Trimble's GeoXT GeoExplorer 2008 Series GPS unit prior to data collection. This file was populated in the field based on a heritage trail data dictionary created by DCGIS. The Trimble data was then transferred to a personal geodatabase created for daily data cleanup and preparation.

Staff and summer youth then went into the field and collected Heritage Trail plaque locations. After each trail collection, the data was transferred to the personal geodatabase. Staff and summer youth reviewed, qc'd, and prepared the data for final publication.

Distribution

Most DC GIS datasets can be downloaded from "http://dcgis.dc.gov" on the data center page. Orders can also be made by contacting OCTO GIS at "dcgis@dc.gov", especially for datasets not available for download.

Distribution liability
Acknowledgment of the DC Geographic Information Systems Program (DC GIS). The District of Columbia Government makes no claims as to the completeness, accuracy or content of any data contained hereon, and makes no representation of any kind, including, but not limited to, the warranty of the accuracy or fitness for a particular use, nor are any such warranties to be implied or inferred with respect to the information or data furnished herein.

Distributed by
GIS Data Coordinator
in DC Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: (202) 727-5660
hours: 8:30 am - 5:30 pm

Entity

DCGIS_HeritageTrailPt

Attributes

  • SHAPE / ESRI
    Feature geometry.
  • SIGN_NUMBE / ESRI
    Feature geometry.
  • Shape / ESRI
    Feature geometry
  • X / ESRI
    Internal feature number.
  • WEBSITE
  • Website
  • NAME / ESRI
    Feature geometry.
  • Y

Metadata

FGDC Content Standards for Digital Geospatial Metadata / FGDC-STD-001-1998 as of 20110210

Provided by
GIS Data Coordinator
in D.C. Office of the Chief Technology Officer

441 4th St NW, Suite 930 South
Washington DC, 20001, USA

fax: (202) 727-5660
hours: 8:30 am - 5 pm