Service Description: Global Self-consistent, Hierarchical, High-resolution Geography Database (GSHHG) is a high-resolution geography data set, amalgamated from two databases: World Vector Shorelines (WVS) and CIA World Data Bank II (WDBII). The former is the basis for shorelines while the latter is the basis for lakes, although there are instances where differences in coastline representations necessitated adding WDBII islands to GSHHG. The WDBII source also provides political borders and rivers. GSHHG data have undergone extensive processing and should be free of internal inconsistencies such as erratic points and crossing segments. The shorelines are constructed entirely from hierarchically arranged closed polygons.
GSHHG combines the older GSHHS shoreline database with WDBII rivers and borders, available in either ESRI shapefile format or in a native binary format. Geography data are in five resolutions: crude(c), low(l), intermediate(i), high(h), and full(f). Shorelines are organized into four levels: boundary between land and ocean (L1), boundary between lake and land (L2), boundary between island-in-lake and lake (L3), and boundary between pond-in-island and island (L4). Datasets are in WGS84 geographic (simple latitudes and longitudes; decimal degrees).
GSHHG is released under the GNU Lesser General Public license, and is developed and maintained by Dr. Paul Wessel, SOEST, University of Hawai'i, and Dr. Walter H. F. Smith, NOAA Laboratory for Satellite Altimetry. Please notify Dr. Paul Wessel and Dr. Walter H.F. Smith if any changes are made to the GSHHG data set for commercial use.
Note: high resolution version - The Douglas-Peucker line reduction wasused to reduce data size by ~80% relative to full.
Service ItemId: 8dc4695de9284cb1b5ee9219977701bc
Has Versioned Data: false
Max Record Count: 2000
Supported query Formats: JSON
Supports applyEdits with GlobalIds: False
Supports Shared Templates: True
All Layers and Tables
Layers:
Description:
Copyright Text:
Spatial Reference: 4326 (4326)
Initial Extent:
XMin: -123.03568816188
YMin: -104.830391645566
XMax: 87.1356327446137
YMax: 161.880523938928
Spatial Reference: 4326 (4326)
Full Extent:
XMin: -179.9999999999
YMin: -89.9999999999
XMax: 180.0000000001
YMax: 83.6333890004021
Spatial Reference: 4326 (4326)
Units: esriDecimalDegrees
Child Resources:
Info
SharedTemplates
Supported Operations:
Query
ConvertFormat
Get Estimates