Name: Topography Lines

Display Field: OBJECTID

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Contours depicting land topography were constructed for the Texas coastal region. The underlying dataset was the U. S. Geological Survey National Elevation Dataset (NED), a raster dataset having a one arc-second grid resolution; it was imported into GMT (Generic Mapping Tools), where digital vector contours were derived. The raster data were smoothed and filtered prior to contouring. Editing of contours was carried out in the Adobe Illustrator software package, and exported in an image file. The vector contours were imported into Arc-GIS, where a shapefile containing the contours was created. The National Elevation Dataset (NED) is a new raster product assembled by the U.S. Geological Survey (USGS). Data corrections were made in the NED assembly process to minimize artifacts, permit edge matching, and fill sliver areas of missing data. The NED has a resolution of 1 arc-second (approximately 30 meters) for the conterminous United States, Hawaii, and Puerto Rico and a resolution of 2 arc-seconds for Alaska. National Elevation Dataset data sources have a variety of elevation units, horizontal datums, and map projections. For information on NED, refer to http://erg.usgs.gov/isb/pubs/factsheets/fs14899.html For information on GMT, refer to http://gmt.soest.hawaii.edu/ Note: Support of the Texas Parks and Wildlife Department in preparation of these datasets is gratefully acknowledged.

Copyright Text:

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 1000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -10909307.6752
YMin: 2978994.643
XMax: -10438864.9568
YMax: 3503538.9178
Spatial Reference: 102113 (3785)

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID_1

Unique ID Field:

Name : OBJECTID_1

IsSystemMaintained : True

Global ID Field:

Type ID Field:

Fields:

• OBJECTID_1 (type: esriFieldTypeOID, alias: OBJECTID_1, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• CONTOUR (type: esriFieldTypeInteger, alias: CONTOUR, SQL Type: sqlTypeOther, nullable: true, editable: true)
• FID_Topogr (type: esriFieldTypeInteger, alias: FID_Topogr, SQL Type: sqlTypeOther, nullable: true, editable: true)
• OBJECTID (type: esriFieldTypeDouble, alias: OBJECTID, SQL Type: sqlTypeOther, nullable: true, editable: true)
• NAME (type: esriFieldTypeString, alias: NAME, SQL Type: sqlTypeOther, length: 90, nullable: true, editable: true)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Topography Lines
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:

Attributes:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/30/2021 9:05:49 PM

Schema Last Edit Date: 7/30/2021 9:05:49 PM

Data Last Edit Date: 7/30/2021 9:05:49 PM

Supported Operations:   Query   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat