Geospatial data for the Vegetation Mapping Inventory Project of San Antonio Missions National Historical Park

Metadata Updated: January 29, 2020

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles.

To produce the digital map, a combination of 1:12,000-scale ortho imagery acquired in 2003, 2004, and 2005 and all of the GPS-referenced ground data were used to interpret the complex patterns of vegetation and land-use. All imagery was acquired from the U.S. Department of Agriculture - Farm Service Agency’s Aerial Photography Field Office and the National Agriculture Imagery Program. In the end, 32 map units (13 vegetated and 19 land-use) were developed and directly cross-walked or matched to corresponding plant associations and land-use classes. All of the interpreted and remotely sensed data were converted to Geographic Information System (GIS) databases using ArcGIS© software. Draft maps were printed, field tested, reviewed, and revised. One hundred-twenty four accuracy assessment (AA) data points were collected in 2006 and used to determine the map’s accuracy. After final revisions, the accuracy assessment revealed an overall thematic accuracy of 89%.

Project Size = 6,784 acres San Antonio Missions National Historical Park = 844 acres Map Classes = 32 13 Vegetated 19 Non-vegetated Minimum Mapping Unit = ½ hectare is the program standard but this was modified at SAAN to ¼ acre. Total Size = 1,122 Polygons Average Polygon Size = 6 acres Overall Thematic Accuracy = 89%

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources



Metadata Created Date January 29, 2020
Metadata Updated Date January 29, 2020

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Created Date January 29, 2020
Metadata Updated Date January 29, 2020
Publisher National Park Service
Unique Identifier NPS_DataStore_2233384
Maintainer Email
Public Access Level public
Bureau Code 010:24
Metadata Context
Metadata Catalog ID C:\Program Files (x86)\NPS\DataStore\Application\OpenData\NPS_DataStore_v1_1.json
Schema Version
Catalog Describedby
Data Quality true
Harvest Object Id ca56a01a-568e-466e-8a7e-396fe9c94292
Harvest Source Id 5b7e4031-1e2d-428b-92e2-56554bbd7371
Harvest Source Title DOI Open Data
Data First Published 2007-05-01
Homepage URL
Data Last Modified 2007-05-01
Program Code 010:118, 010:119
Related Documents ""
Source Datajson Identifier true
Source Hash d8236c4c8083b70b76ba0d98b3408d1be5d43815
Source Schema Version 1.1
Spatial -100.508148,25.8368855,-81.2157059,36.3803329
Temporal 2002-01-01/2005-01-01
Category "Geospatial Dataset"

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