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VMap0 Landmass and Oceanic Island Polygons

ISO19115/19139 XML

Identification info
Title VMap0 Landmass and Oceanic Island Polygons
Date 13-05-2006
Date type creation
Edition Third
Presentation form mapDigital
Abstract Seamless and topologically robust derivative of source VMap0 data layers for landmass and oceanic island data layers. The MASK_PY shapefile data layer is comprised of 2 derivative vector framework library features derived based on 1:1 000 000 data originally from VMap0, 5th Edition. The layer provides nominal analytical/mapping at 1:1 000 000. Data processing complete globally, this is an African subset.

Acronyms and Abbreviations:
VMap0 - Vector Map for Level 0.
Purpose 28 topical data layers compiled from sixty+ source layers.
Status completed
Point of contact
Individual name Jose Aguilar-Manjarrez
Organisation name FAO - Aquaculture Management and Conservation Service (FIMA)
Position name Fishery Resource Officer
Delivery point Viale delle Terme di Caracalla
City Rome
Administrative area 
Postal code 00153
Country Italy
Electronic mail address  JoseAguilarManjarrez@fao.org
Role custodian
Point of contact
Individual name 
Organisation name FAO - Aquaculture Management and Conservation Service (FIMA)
Position name 
Delivery point 
City 
Administrative area 
Postal code 
Country 
Electronic mail address  JoseAguilarManjarrez@fao.org
Role owner
Point of contact
Individual name 
Organisation name FAO - Aquaculture Management and Conservation Service (FIMA)
Position name 
Delivery point 
City 
Administrative area 
Postal code 
Country 
Electronic mail address  JoseAguilarManjarrez@fao.org
Role publisher
Point of contact
Individual name 
Organisation name U.S. National Geospatial-Intelligence Agency (VMap0)
Position name 
Voice -2153
Facsimile 
Delivery point 4600 Sangamore Road
City MS D-56 Bethesda, MD
Administrative area 
Postal code 20816-5003
Country USA
Electronic mail address  chdesk@nga.mil
Role originator
Point of contact
Individual name 
Organisation name FAO- GeoNetwork
Position name 
Delivery point 
City 
Administrative area 
Postal code 
Country 
Electronic mail address  geonetwork@fao.org
Role distributor
Maintenance and update frequency asNeeded
Descriptive keywords  framework library , base map , VMap0 , African Water Resource Database , AWRD , ancillary vector (theme).
Descriptive keywords  Africa (place).
Access constraints copyright
Use constraints copyright
Other constraints 
Spatial representation type vector
Equivalent scale
Denominator 1000000
Language English
Character set utf8
Topic category code oceans
Extent
Temporal Extent
Begin date 1982
End date 2000
Extent
Geographic bounding box
North bound latitude
90
West bound longitude
-180		East bound longitude
180
South bound latitude
-90
Supplemental Information This map is part of two publications entitled:
"Jenness, J.; Dooley, J.; Aguilar-Manjarrez, J.; Riva, C. African Water Resource Database. GIS-based tools for inland aquatic resource management. 1. Concepts and application case studies CIFA Technical Paper. No.33, Part 1. Rome, FAO. 2007. 167p. "
"Jenness, J.; Dooley, J.; Aguilar-Manjarrez, J.; Riva, C. African Water Resource Database. GIS-based tools for inland aquatic resource management. 2. Technical manual and workbook. CIFA Technical Paper. No. 33, Part 2. Rome, FAO. 2007. 308 p."
The primary AWRD interface, tool-sets and data integral to the function of the AWRD are distributed in two DVD's accompanying CIFA No. 33, Part 2, and are also available for download from FAO's GeoNetwork and GISFish GIS portals.
Distribution info
Units of distribution shapefile
Transfer size 
Data for download VMap0 Landmass and Oceanic Island Polygons
Spatial representation info
Topology level geometryOnly
Geometric object type complex
Reference system info
Data quality info
Hierarchy level dataset
Statement To ensure data were robustly derived from the source library a number of basic steps and cross-checks were followed. 1) Polygons: 1st built from linear features where available then cleaned/dissolved using unique attributes and then compared against source polygons for gaps or topological inconsistencies; if no linear features source polygons were deconstructed into lines and point/polygon topology reconstructed then cross-checked against polygonal baseline. 2) Linear features: processed as lines and cleaned/dissolved on unique combination of specific attributes to maintain encoding. Relevant line or polygonal outlines from other library layers then added to topologically reduce gaps--e.g.. roads/pnt-tunnels or rivers/swb outlines. All processing in ESRI coverage format to ensure Pnt-Ln-Poly attributes maintained. 3) Order: coastline & offshore islands to Poly landmasses; add SWBs; add PopPlace & other polys features; add linear; add point; harmonize encoding; compare against previous editions.
Metadata
File identifier  a326e280-b06d-11db-8922-000d939bc5d8
Language English
Character set utf8
Date stamp  2007-01-30T15:24:47
Metadata standard name  ISO 19115:2003/19139
Metadata standard version  1.0
Metadata author
Individual name Joe Dooley
Organisation name 
Position name Consultant
Delivery point 
City 
Administrative area 
Postal code 
Country 
Electronic mail address  dooley@sdsmap.com
Role processor

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