2015 Topographic Contours 1ft


Identification_Information:
Citation:
Citation_Information:
Originator:Karen Kwasnowski
Publication_Date:2015-08-26
Title:
2015 Topographic Contours 1ft
Geospatial_Data_Presentation_Form:vector digital data
Online_Linkage: http://www.pasda.psu.edu
Description:
Abstract:
The City of Philadelphia has migrated metadata for this data set to the City-wide Metadata Catalog. For any questions about the migration and administration of the Metadata Catalog, please contact maps@phila.gov. To view the metadata for this layer, please visit:http://metadata.phila.gov/#home/datasetdetails/5696bec037a762966e837b49/representationdetails/5696bf4c006891480aabbe39/
Purpose:
The lidar dataset was collected to be utilized for the creation of a digital elevation model and 1ft contours. Other uses expected. Lidar Data Products for the Philadelphia, PA collection area including a 5ft Digital Elevation Model (DEM), and tiled1ft Contours.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2015-01-01
Currentness_Reference:
Publication Date
Status:
Progress:Complete
Maintenance_and_Update_Frequency:Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:-112.125088
East_Bounding_Coordinate:-111.678816
North_Bounding_Coordinate:43.78476
South_Bounding_Coordinate:43.623514
Keywords:
Theme:
Theme_Keyword_Thesaurus:EDI Thesaurus
Theme_Keyword:LiDAR
Place:
Place_Keyword_Thesaurus:Geographic Names Index Service
Place_Keyword:Philadephia County
Place:
Place_Keyword_Thesaurus:None
Place_Keyword:Pennsylvania
Access_Constraints:Other Constraints: Access to this data is constrained by the license agreements between Pictometry International and Philadelphia, PA
Use_Constraints:
See access and use constraints information.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pictometry International Corp.
Contact_Person:Thom S. Salter
Contact_Position:Manager, Photogrammetric Production
Contact_Address:
Address_Type:Unknown
Address:
100 Town Centre Drive, Suite A
City:Rochester
State_or_Province:NY
Postal_Code:14623
Country:US
Contact_Voice_Telephone:585-486-0093
Contact_Facsimile_Telephone:585-486-0098
Hours_of_Service:0900-1700
Native_Data_Set_Environment:
Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.0.2414
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Data_Quality_Information:
Logical_Consistency_Report:
Visual checks were used to make sure all features and feature classes are complete.
Completeness_Report:
Visual checks were used to make sure all features and feature classes are complete.
Lineage:
Process_Step:
Process_Description:
Terrain, DEM, and 1ft Contours: For the Bare Earth Data, the Lidar Point Data was converted to a Multipoint feature class, with a filter for Ground (class 2). Breaklines for hydrographic features were digitized from the intensity values of the lidar data. The hydrographic features, include water bodies (> 0.5 Acre), wide rivers (> 5m wide), and an artifical path representing the centerline of the wide rivers. Elevation values from the lidar data were conflated to the “z-values” of the features at 5ft intervals from the lidar data using QCoherent’s LP360 software. Elevation values were conflated to the Stream Centerline Breaklines at 5ft intervals with a downstream constraint algorithm. After the centerlines were conflated, a script was used to copy the elevation values from the artificial path to the surrounding double line stream polygons, which acts to essentially flatten the wide river from stream bank to stream bank. Elevation values for the water body polygons were added as an attribute to the feature class based on the minimum lidar elevation value along the shoreline of the water body. The multipoint feature class and breakline feature classes were used to create a Ground terrain for the collection area. The terrain was converted to a DEM with 5ft cell resolution. The contours were created from the DEM. The contours were edited in the following manner: Lines shorter than 30ft (1.5 raster cells) were deleted. The contour lines were smoothed using a PAEK algorithm with a 3m smoothing tolerance. Attributes were added for 10ft, 20ft, and 50ft Index contours. A Lidar Tile Index Feature Class was created for the original lidar files. A hillshade was also created for the DEM using default ESRI illumination parameters.
Process_Date:2015-08-26
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type:String
Point_and_Vector_Object_Count:512933
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name:NAD 1983 StatePlane Pennsylvania South FIPS 3702 Feet
Lambert_Conformal_Conic:
NAD 1983 StatePlane Pennsylvania South FIPS 3702 Feet
Standard_Parallel:39.93333333333333
Standard_Parallel:40.96666666666667
Longitude_of_Central_Meridian:-77.75
Latitude_of_Projection_Origin:39.33333333333334
False_Easting:1968500.0
False_Northing:0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:coordinate pair
Coordinate_Representation:
Abscissa_Resolution:0.00000002690796474524862
Ordinate_Resolution:0.00000002690796474524862
Planar_Distance_Units:Foot_US
Geodetic_Model:
Horizontal_Datum_Name:D North American 1983
Ellipsoid_Name:GRS 1980
Semi-major_Axis:6378137.0
Denominator_of_Flattening_Ratio:298.257222101
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:Contour_2015_1ft
Attribute:
Attribute_Label:OBJECTID
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:Id
Attribute:
Attribute_Label:Contour
Attribute:
Attribute_Label:Index10ft
Attribute:
Attribute_Label:Index20ft
Attribute:
Attribute_Label:Index50ft
Attribute:
Attribute_Label:SHAPE_Length
Attribute_Definition:
Length of feature in internal units.
Attribute_Definition_Source:
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Positive real numbers that are automatically generated.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Philadelphia
Contact_Address:
Address_Type:Unknown
Address:
Not available
City:Not available
State_or_Province:CO
Postal_Code:99999
Country:US
Contact_Voice_Telephone:999-999-9999
Distribution_Liability:
See access and use constraints information.
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing and physical address
Address:
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 8792
Contact_Electronic_Mail_Address:(814) 865 8792
Distribution_Liability:
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.
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Metadata_Reference_Information:
Metadata_Date:20160524
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:GroundPoint Technologies LLC
Contact_Person:Karen Kwsanowski
Contact_Position:Chief Technical Officer
Contact_Address:
Address_Type:Unknown
Address:
17 Highland Dr
City:Marcellus
State_or_Province:NY
Postal_Code:13108
Country:US
Contact_Voice_Telephone:315-459-1515
Metadata_Standard_Name:FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Access_Constraints:None
Metadata_Use_Constraints:
Access to this data is constrained by the license agreements between Pictometry International and Philadelphia, PA.
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