MAP LAYERS |
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LAYER NAME: |
KESPOTHEIGHTS |
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AUTHOR/CREATOR: |
DCW |
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ORGANIZATION: |
DCW |
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LINK URL: |
http://www.princeton.edu/~geolib/gis |
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CREATION DATE: |
1993 |
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MODIFIED BY: |
DATA AND INFORMATION MANAGEMENT UNIT UNDP_SOMALIA |
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MODIFICATION DATES: |
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ABSTRACT: |
This coverage contains spot heights at a 1:1000000 scale. The elevation of the spot heights is given in meters. |
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CONSTRAINTS: |
Acknowledgment of DCW, UNDP and ESRI would be appreciated in products derived from these data. The data should not be used for navigation or for
producing maps requiring high geodetic accuracy. |
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DATASET SIZE : |
21KB |
STATUS |
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BOUNDING
COORDINATES |
EAST: 43.9431 NORTH: 8.8044 |
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WEST: 31.9862 SOUTH -5.9274
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POSITIONAL
ACCURACY: |
The absolute
horizontal accuracy of the DCW for all features derived from Operational
Navigation Charts (ONC) is 2040 meters (6700 feet) rounded to the nearest 5
meters at 90% Circular Error (CE), World Geodetic System (WGS84).
The
absolute horizontal accuracy of the DCW for all features derived from Jet
Navigation Charts (JNC)
is 4270 meters (14006 feet) at 90% Circular Error.
The absolute vertical accuracy of the DCW is the same as for the original ONC and JNC lithographs at 90% Linear Error (LE), Mean Sea Level (MSL).. |
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COORDINATE SYSTEM: |
DECIMAL DEGREES |
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DATUM: |
WGS 84 |
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MAP PROJECTION: |
GEOGRAPHICAL |
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FORMAT |
ARCVIEW 3.1, SHAPEFILE. |
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TABLES |
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SOURCE: |
DCW |
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SOURCE PUBLICATION
DATE: |
1996 |
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CONSTRAINTS: |
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DATASET SIZE : |
45KB |
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ATTRIBUTE
RELIABILITY: |
UNKNOWN |
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STATUS: |
COMPLETE |
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FIELDS: |
SEE ATTACHED FORM |
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CONTACT NAME: |
Alex Lugadiru |
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ORGANIZATION: |
DEPHA PROJECT |
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POSTAL ADDRESS: |
c/o UNDP DDC P.O. |
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EMAIL ADDRESS: |
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TELEPHONE NO.: |
254-020-7624186/95 |
GEOGRAPHIC INFORMATION
SYSTEMS (GIS) SPATIAL OUTPUT FORMAT
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Field Name |
Field Description |
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HYPOINT |
Internal feature number.
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HYPOINT_ID |
User- assigned feature number User-defined. Integer. Source: ARCINFO |
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HYPTYPE |
Hypsography point
type. Code Definition 1 = Spot elevation 2 = Spot elevation,
questionable elevation or doubtful location 3 = Spot elevation at
the base of a tower 4 = Hydrographic spot elevation |
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HYPTYPETX |
Hypsography point type text. |
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HYPTVAL |
Point value. This item contains the elevation of the point, expressed in feet above mean sea level. The value "99999" is used
for spot locations without an assigned elevation value. |
METERS |
Point value. This item contains the elevation of the point, expressed in meters
above mean sea level. The value "99999" is used
for spot locations without an assigned elevation value. |