Spatial Vegetation Data FAQ Metadata
Frequently-anticipated questions:
- Title: Lyndon B. Johnson National Historical Park Vegetation Mapping Project Spatial Vegetation Data
- Abstract:
-
This metadata is for the vegetation and land-use geo-spatial database for Lydon B. Johnson National Historical Site and surrounding areas. This project is authorized as part of the USGS/NPS Vegetation Mapping Program. The program is being administered by the Core Science Systems (CSS) of the United States Geological Survey (USGS) in conjunction with the National Park Service (NPS) Inventory and Monitoring Program. The USGS/CSS is responsible for overall management and oversight of all ongoing mapping efforts. This mapping effort was performed by the U.S. Bureau of Reclamation's (USBR) Remote Sensing and GIS Group, Technical Service Center, Denver, Colorado, Cogan Technology and The Nature Conservancy (TNC).
- Supplemental_Information: None
- How should this data set be cited?
USBR Remote Sensing and GIS Group, Denver, Colorado, Unpublished Material, lyjo_veg: None None, None, None.
Online Links:
- What geographic area does the data set cover?
- West_Bounding_Coordinate: -113.25564
- East_Bounding_Coordinate: -112.823821
- North_Bounding_Coordinate: 37.532
- South_Bounding_Coordinate: 37.106056
- Description_of_Geographic_Extent: Lyndon B. Johnson National Historical Park and environs
- What does it look like?
- Does the data set describe conditions during a particular time period?
- Calendar_Date: 2005
- Currentness_Reference: ground condition
- What is the general form of this data set?
- Geospatial_Data_Presentation_Form: vector digital data
- How does the data set represent geographic features?
- How are geographic features stored in the data set?
This is a Vector data set.
It contains the following vector data types (SDTS terminology):
- Complete chain (2960)
- Label point (1080)
- GT-polygon composed of chains (1080)
- Point (0)
- String (0)
- What coordinate system is used to represent geographic features?
- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
-
- UTM_Zone_Number: 14
- Transverse_Mercator:
-
- Scale_Factor_at_Central_Meridian: 0.9996
- Longitude_of_Central_Meridian: -111
- Latitude_of_Projection_Origin: 0
- False_Easting: 500000
- False_Northing: 0
Planar coordinates are encoded using Coordinate Pair
Abscissae (x-coordinates) are specified to the nearest 0.000001
Ordinates (y-coordinates) are specified to the nearest 0.000001
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257.
- How does the data set describe geographic features?
- lyjo_veg.pat
- attributes from shapefile table
(Source: Dan Cogan)
- FID
- Internal feature number.
(Source: ESRI)
Sequential unique whole numbers that are automatically generated.
- Shape
- Feature geometry.
(Source: ESRI)
Coordinates defining the features.
- AREA
- Area of feature in internal units squared.
(Source: ESRI)
Positive real numbers that are automatically generated.
- PERIMETER
- Perimeter of feature in internal units.
(Source: ESRI)
Positive real numbers that are automatically generated in meters.
- LYJO_VEG#
- Internal feature number.
(Source: ESRI)
Sequential unique whole numbers that are automatically generated.
- LYJO_VEG-ID
- User-defined feature number.
(Source: ESRI)
Whole numbers that are automatically generated.
- MAP_CLASS
- Map Class Code
(Source: USBR Remote Sensing and GIS Group)
Map class code name.
- MAP_DESC
- Map Class Name
(Source: USBR Remote Sensing and GIS Group)
Map class association common name.
- DENS_MOD
- Modifier - Percent cover of the upper stratum layer in the polygon
(Source: USBR Remote Sensing and GIS Group)
Coverage density physiognomic modifier. Applied to all vegetation map classes.
- PTRN_MOD
- Modifier - Vegetation pattern within the polygon
(Source: USBR Remote Sensing and GIS Group)
Coverage pattern physiognomic modifier. Applied to all vegetation map classes.
- HT_MOD
- Modifier - Height range of the dominant vegetation layer
(Source: USBR Remote Sensing and GIS Group)
| Value | Definition |
|---|
| 0 - 0.5 Meters | 0-0.5 m (0-1.6 ft)
|
| 0.5 - 1 Meters | 0.5-1 m (1.6-3.3 ft)
|
| 15 - 30 Meters | 15-30 m (50-98 ft)
|
| >30 meters |
30 m (>98 ft)
|
- CES_CODE
- NVC Ecological Systems Code
(Source: NatureServe)
National Vegetation Classification Ecological System code.
- CES_NAME
- NVC Ecological Systems Name
(Source: NatureServe)
National Vegetation Classification Ecological System name.
- IDENTIFIER
- NVC Idenification Code
(Source: NatureServe)
CEGL code.
- ASSN_NAME
- NVC Association Name
(Source: NatureServe)
Textual Scientific association name.
- ASSN_CNAME
- NVC Association Common Name
(Source: NatureServe)
Textual common association name.
- NVCS_CODE
- NVC Code
(Source: NatureServe)
National Vegetation Classification System code.
- ALL_NAME
- NVC Alliance Name
(Source: NatureServe)
National Vegetation Classification Alliances (scientific names).
- ALL_CNAME
- NVC Alliance Common Name
(Source: NatureServe)
National Vegetation Classification Alliances (common names).
- FORMATION
- NVC Formation Name
(Source: NatureServe)
National Vegetation Classification Formation name.
- SUBGROUP
- NVC Subgroup Name
(Source: NatureServe)
National Vegetation Classification Subgroup name.
- GROUP
- NVC Group Name
(Source: NatureServe)
National Vegetation Classification Group name.
- SUBCLASS
- NVC Subclass Name
(Source: NatureServe)
National Vegetation Classification Subclass name.
- CLASS
- NVC Class Name
(Source: NatureServe)
National Vegetation Classification Class name.
- LUC_II_GEN
- Anderson General Land Use Name
(Source: USBR Remote Sensing and GIS Group)
Land Cover Classification System types.
- LUC_II
- Anderson Land Use Name
(Source: USBR Remote Sensing and GIS Group)
Land Use Classification System types.
- ACRES
- Polygon Area in Acres
(Source: USBR Remote Sensing and GIS Group)
Unique numbers - user defined
- Entity_and_Attribute_Overview:
-
Attributes were either generated by ArcInfo or assigned by the USBR Remote Sensing GIS Group.
- Entity_and_Attribute_Detail_Citation:
-
Lyndon B. Johnson National Historical Site Vegetation Mapping Project Final Report (DOI - USGS/USBR)
- Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- USBR Remote Sensing and GIS Group, Denver, Colorado
- Who also contributed to the data set?
USBR Remote Sensing and GIS Group: Mike Pucherelli.
Cogan Technology, Inc.: Dan Cogan (Cogan Technology Inc.)
- To whom should users address questions about the data?
Bureau of Reclamation
c/o Mike Pucherelli
Group Manager
P.O. Box 25007 Bldg. 56 Denver Federal Center M.S. D-8260
Denver, Colorado 80225
U.S.A
303-445-2267 (voice)
303-445-6337 (FAX)
mpucherelli@do.usbr.gov
- Hours_of_Service: 8 am - 5 pm
- Contact_Instructions: None
he NPS Inventory and Management goals are, among others, to consistently map and document the vegetation of all National Park Service units with a resource component, thereby creating a baseline vegetation inventory.
The purposes of this specfic mapping effort are varied and include the following: 1) provide support for NPS Resource Management, 2) promote vegetation-related research, 3) provide support for NPS Planning and Compliance, 4) add to the information base for NPS Interpretation, 5) provide a vegetation baseline inventory for the Park, 6) provide information needed for NPS Fire Program, and 7) assist in overall NPS Operations.
- From what previous works were the data drawn?
- NAIP Ortho-photo (source 1 of 1)
-
U.S. Dept of Agriculture, Unknown, NAIP 2005 Orthophotography Blano and Gillespie Counties: None None, None, None.
Online Links:
- Other_Citation_Details: None
- Type_of_Source_Media: CD-ROM
- Source_Scale_Denominator: 12000
- Source_Contribution: None
- How were the data generated, processed, and modified?
- Date: 2006 (process 1 of 2)
-
All plant community data that could be interpreted from the NAIP imagery were digitized in accordance with the minimum mapping unit (MMU) of 1/2 hectare. This included selected features that fell into the National Vegetation Classification and the Anderson Level II land use classification. Some classes below the MMU were included, especially water and wetland features and those at the edge of the study area (i.e. cut off by other features and borders). Roads (to visible right-of-way or fence line) and streams/drainages wider than 10 meters were digitized as polygons and attributed accordingly. Polygons were checked in the field and attributed accordingly.
Person who carried out this activity:
Dan Cogan
Cogan Technology
Vice-president
21 Valley Road
Galena, Illinois 61036
USA
815-777-1773 (voice)
815-777-1773 (FAX)
dancogan@cogantech.com
- Hours_of_Service: 8 am - 5 pm
- Contact_Instructions: None
- Date: Unknown (process 2 of 2)
-
Metadata imported.
Data sources used in this process:
- C:\DOCUME~1\Dan\LOCALS~1\Temp\xmlC3.tmp
- What similar or related data should the user be aware of?
- How well have the observations been checked?
The thematic accuracy is approximately 92%. Please read the accompanying report or check with the park for the latest accuracy assessment values.
- How accurate are the geographic locations?
Unknown: Assumed that the NAIP 2005 basemap met the National Map Accuracy Standards, reference the NAIP ortho-photo metadata.
- How accurate are the heights or depths?
Unknown: Assumed that the NAIP 2005 basemap met the National Map Accuracy Standards, reference the NAIP ortho-photo metadata.
- Where are the gaps in the data? What is missing?
All data that could be interpreted from the NAIP imagery were digitized in accordance with the minimum mapping unit (MMU) of 1/2 hectare. This included selected features that fell into the National Vegetation Classification and the Anderson Level II land use classification. Some classes below the MMU were included, especially water and wetland features and those at the edge of the study area (i.e. cut off by other features and borders). Roads (to visible right-of-way or fence line) and streams/drainages wider than 10 meters were digitized as polygons and attributed accordingly.
- How consistent are the relationships among the observations, including topology?
All polygon features were checked for topology, existence of label points, and label point uniqueness. The labels were checked for correct and complete attributing. All nodes where checked for unintentional lines and to ensure that the polygons were closed. All steps preformed using ESRI ArcInfo commands.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints: None
- Who distributes the data set? (Distributor 1 of 1)
USGS/CSS/Core Science Analytics and Synthesis
c/o USGS-NPS Vegetation Mapping Program Coordinator
Denver Federal Center, Building 810, Room 8000, MS 302
Denver, Colorado 80225
(303) 202-4220 (voice)
303-202-4219 (FAX)
gs-b-npsveg@usgs.gov
- What's the catalog number I need to order this data set?
Downloadable Data
- What legal disclaimers am I supposed to read?
The U.S. Geological Survey and the National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (if available) are not legal documents and are not intended to be used as such.
The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. Any related graphics (if available) are intended to aid the data user in acquiring relevant data; it is not approriate to use the related graphics as data.
The U.S. Geological Survey and the National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an U.S. Geological Survey and National Park Service servers and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Mention of trade names or commercial products in this metadata report does not constitute endorsement or recommendation for use by the U. S. Department of the Interior, U. S. Geological Survey and National Park Service.
- How can I download or order the data?
- Availability in digital form:
- Cost to order the data: None
- Dates:
- Last modified: 26-Aug-2008
Last Reviewed: 02-Jun-2010
- Metadata author:
-
USGS/CSS/Core Science Analytics and Synthesis
c/o USGS-NPS Vegetation Mapping Program Coordinator
Denver Federal Center, Building 810, Room 8000, MS 302
Denver, Colorado 80225
(303) 202-4220 (voice)
303-202-4219 (FAX)
gs-b-npsveg@usgs.gov
- Metadata standard:
- FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (FGDC-STD-001.1-1999)
- Metadata extensions used:
-
Generated by mp version 2.9.12 on Wed Jun 02 14:15:53 2010
Return to USGS Vegetation Characterization Program at Lyndon B. Johnson National Historical Park
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