20130613
16513200
1.0
FGDC CSDGM Metadata
FALSE
OneFootContour
002
2590183.009556
2648740.112914
2072710.840641
2120272.881015
1
Projected
GCS_North_American_1983
NAD_1983_StatePlane_New_Mexico_West_FIPS_3003_Feet
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Linear Unit: Foot_US (0.304801)
20230627
14294500
20230627
14294500
Karen Kwsanowski
GroundPoint Technologies LLC
Chief Technical Officer
315-459-1515
17 Highland Dr
Marcellus
NY
13108
US
20230627
ArcGIS Metadata
1.0
San Juan
999-999-9999
Not available
Not available
TX
99999
US
withheld
Enterprise Geodatabase Feature Class
OneFootContour
20130614
Karen Kwasnowski
Lidar Data Products for the San Juan, NM collection area including a 5ft Digital Elevation Model (DEM), and tiled1ft Contours.
The lidar dataset was collected to be utilized for the creation of a digital elevation model and 1ft contours. Other uses expected.
Thom S. Salter
Pictometry International Corp.
Manager, Photogrammetric Production
585-486-0093
585-486-0098
100 Town Centre Drive, Suite A
Rochester
NY
14623
US
0900-1700
San Juan County
Geographic Names Index Service
New Mexico
LiDAR
EDI Thesaurus
LiDAR
New Mexico
San Juan County
Access constraints: Access to this data is constrained by the license agreements between Pictometry International and San Juan, NM
Use constraints: Access to this data is constrained by the license agreements between Pictometry International and San Juan, NM.
Use constraints: Access to this data is constrained by the license agreements between Pictometry International and San Juan, NM.
See access and use constraints information.
Esri ArcGIS 13.0.3.36057
-108.287453
-108.086948
36.695280
36.826517
1
Publication Date
2013
002
Use constraints: Access to this data is constrained by the license agreements between Pictometry International and San Juan, NM.
Use constraints: Access to this data is constrained by the license agreements between Pictometry International and San Juan, NM.
Visual checks were used to make sure all features and feature classes are complete.
Visual checks were used to make sure all features and feature classes are complete.
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 (> 1 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 DEM was smoothed using a focal mean 3x3 cell averaging filter. The contours were created from the smoothed DEM. The contours were edited in the following manner: Lines shorter than 40ft (2 raster cells) were deleted, looped contour lines in large water ways were deleted, the shape of contour lines along the edge of water ways were checked to make sure they did not weave into the waterways. The contour lines were smoothed using a PAEK algorithm with a 2.5m 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.
20130614
dataset
EPSG
5.3(9.0.0)
Simple
FALSE
0
TRUE
FALSE
0
OneFootContour
Feature Class
0
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
8
0
0
Feature geometry.
ESRI
Coordinates defining the features.
Id
Id
Integer
4
10
0
Contour
Contour
Double
8
38
8
Index10ft
Index10ft
SmallInteger
2
5
0
Index20ft
Index20ft
SmallInteger
2
5
0
Index50ft
Index50ft
SmallInteger
2
5
0
Shape.STLength()
Shape.STLength()
Double
0
0
0