Identification_Information: Citation: Citation_Information: Originator: North Carolina State University, Center for Earth Observation Publication_Date: 200703 Title: Accuracy Assessment Points Modified for Fort Necessity National Battlefield Vegetation Mapping Project Geospatial_Data_Presentation_Form: vector digital data Online_Linkage: http://biology.usgs.gov/npsveg/ftp/vegmapping/fone/foneaa.zip Larger_Work_Citation: Citation_Information: Originator: Pennsylvania Natural Heritage Program Publication_Date: 20050930 Title: Vegetation Classification and Mapping at Fort Necessity National Battlefield Geospatial_Data_Presentation_Form: document Description: Abstract: Locations of thematic accuracy assessment observation points at Fort Necessity National Battlefield. In this data set, the X, Y coordinates for two plots have been altered to protect rare plant species that could be vulnerable to collection. Purpose: Assess the thematic accuracy assessment of the vegetation association map created for Fort Necessity NationalBattlefield. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040615 Ending_Date: 20040624 Currentness_Reference: 20050930 Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Description_of_Geographic_Extent: Fort Necessity National Battlefield and environs Bounding_Coordinates: West_Bounding_Coordinate: -79.641425 East_Bounding_Coordinate: -79.574660 North_Bounding_Coordinate: 39.880555 South_Bounding_Coordinate: 39.803275 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: thematic accuracy assessment Theme_Keyword: vegetation mapping Theme_Keyword: observation points Place: Place_Keyword_Thesaurus: None Place_Keyword: Fort Necessity National Battlefield Place_Keyword: Pennsylvania Taxonomy: Keywords/Taxon: Taxonomic_Keyword_Thesaurus: none Taxonomic_Keywords: Standardized National Vegetation Classification System Taxonomic_Keywords: vegetation classification Taxonomic_Keywords: alliance Taxonomic_Keywords: community association Taxonomic_Classification: Taxon_Rank_Name: Kingdom Taxon_Rank_Value: Plantae Access_Constraints: None. Use_Constraints: None. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Pennsylvania Science Office of The Nature Conservancy Contact_Position: Ecologist Contact_Address: Address_Type: mailing and physical address Address: 208 Airport Drive City: Middletown State_or_Province: Pennsylvania Postal_Code: 17057 Country: USA Contact_Voice_Telephone: 717-948-3962 Contact_Facsimile_Telephone: 717-948-3957 Data_Set_Credit: The shapefile from which this dataset was derived was created by the Pennsylvania Natural Heritage Program, Pennsylvania Science Office of The Nature Conservancy, Western Pennsylvania Conservancy. Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy assessment observation number attributed to each point is correct. Logical_Consistency_Report: ESRI point geometry Completeness_Report: Each accuracy assessment observation is represented by a point. The X, Y coordinates for two plots have been altered, as described in the second processing step below, to protect rare species that could be vulnerable to collection. Lineage: Process_Step: Process_Description: To assess the thematic accuracy assessment of the vegetation association map, a stratified random sampling approach wasused, distributing the sampling effort across the eight vegetation associations. The number of samples per community type variedaccording to the rarity of the vegetation type, both in terms of number of polygons and polygon size, following accpeted USGS/NPSvegetation mapping protocols. The number of sampling points was reduced from that recommended by the protocol for relativelyabundant vegetation types that are reliably delineated from the aerial photography, such as conifer plantations, modified successionalforest, and successional old fields. In order to randomly determine the location of these sampling points in the polygons, the random number generator function inMicrosoft Excel was used to create 900 sets of random x,y coordinates that fell within the boundaries of the three units of FortNecessity. These coordinates were imported into ArcView 3.2 and overlain onto the vegetation map. The first coordinate listed inthe table of coordinates to fall within a polygon, at least 50 m from the polygon boundary, was selected. All other points that fellwithin that polygon were then deleted. This procedure was carried out until all 63 points were assigned. Each accuracy assessment point was then located in the field using a Trimble Geo XM GPS unit. Points were visited between 20040615 and 20040624. Source_Used_Citation_Abbreviation: C:\NPS 6 Parks\NPS 6 parks GIS\FONE GIS\WPC datapoints\fone_plots_only.shp.xml Process_Date: 20040624 Source_Produced_Citation_Abbreviation: Accuracy assessment plots shapefile Process_Step: Process_Description: The accuracy assessment plots shapefile was altered to create a shapefile suitable for public distribution. The X, Y coordinates for each plot that contains a rare plant species that could be vulnerable to collection were rounded as follows: the coordinate value was rounded up if the last three digits = 000-499; the coordinate value was rounded down if the last three digits = 500-999. Coordinates were altered in this manner for two plots. As a result, it is possible that some or all of these points now fall outside of a vegetation polygon or outside the park boundary. A field named "crd_alt" was added to the shapefile attribute table; the value for this field is "no" if the plot coordinates have not been altered and "yes" if the plot coordinates were altered. Process_Date: 200703 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: North Carolina State University, Center for Earth Observation Contact_Address: Address_Type: mailing Address: Campus Box 7106 Address: North Carolina State University City: Raleigh State_or_Province: NC Postal_Code: 27695-7106 Country: USA Contact_Voice_Telephone: (919) 515-3430 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: 63 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Transverse Mercator Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -81.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000016 Ordinate_Resolution: 0.000016 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: fone_veg_aa_2004 Entity_Type_Definition: attribute table for shapefile Entity_Type_Definition_Source: Pennsylvania Natural Heritage Program Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: AA_OBS_ID Attribute_Definition: accuracy assessment obervation number Attribute_Definition_Source: NPS 4 letter park code + unique number Attribute_Domain_Values: Unrepresentable_Domain: NPS 4 letter park code and unique number Attribute: Attribute_Label: crd_alt Attribute_Definition: Field used to indicate whether X, Y coordinates for the plot have been altered to protect a rare species that could be vulnerable to collection Attribute_Definition_Source: NCSU Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: yes Enumerated_Domain_Value_Definition: The X, Y coordinates for the plot have been altered. Enumerated_Domain_Value_Definition_Source: NCSU Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: no Enumerated_Domain_Value_Definition: The X, Y coordinates for the plot have not been altered. Enumerated_Domain_Value_Definition_Source: NCSU Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS BRD Center for Biological Informatics Contact_Person: USGS-NPS Vegetation Mapping Program Coordinator Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Room 8000, MS 302 City: Denver State_or_Province: Colorado Postal_Code: 80225 Contact_Voice_Telephone: (303) 202-4220 Contact_Facsimile_Telephone: 303-202-4219 Contact_Electronic_Mail_Address: gs-b-npsveg@usgs.gov Resource_Description: The name of the shapefile that this metadata dcouments is: fone_veg_aa_2004.shp Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: HTML Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://biology.usgs.gov/npsveg/fone/index.html Access_Instructions: Internet Access Fees: None Metadata_Reference_Information: Metadata_Date: 200703 Metadata_Review_Date: 20100524 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS BRD Center for Biological Informatics Contact_Person: USGS-NPS Vegetation Mapping Program Coordinator Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Room 8000, MS 302 City: Denver State_or_Province: Colorado Postal_Code: 80225 Contact_Voice_Telephone: (303) 202-4220 Contact_Facsimile_Telephone: 303-202-4219 Contact_Electronic_Mail_Address: gs-b-npsveg@usgs.gov Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001.1-1999 Metadata_Extensions: Online_Linkage: http://www.nbii.gov/portal/server.pt/community/fgdc_metadata/255