Global
Shoreline Vector Databases for Geocart
These
Global Shoreline files were converted from GSHHS format (Global Self-consistent,
Hierarchical, High-resolution Shoreline Database) to Geocart data base
format in Jan. 2001.
The
original data was downloaded from University of Hawaii’s School
of Ocean and Earth Science and Technology at this web site:
The
full resolution data base is composed of 7 files:
File
|
Size
|
Comment
|
GlobalShore_FullRes.coast
|
82.7
MB
|
Coastlines
and ocean islands
|
GlobalShore_FullRes.lake
|
6.7
MB
|
Lakes
|
GlobalShore_FullRes.island
|
524
K
|
Islands
within lakes
|
GlobalShore_FullRes.pond
|
12
K
|
Water
bodies on islands
|
WDBII
Nations
|
3.8
MB
|
National
boarders circa 1995
|
WDBII
Provinces
|
14.6
MB
|
Provinces
circa 1995
|
WDBII
Rivers
|
19.6
MB
|
Rivers
|
There are also four reduced resolution versions of the Global Shoreline
files. (There is no reduced version of the WDBII files)
The
data bases are a combination of two public domain data bases:
Coastlines and islands are derived from World Vector Shoreline. World
Vector Shoreline in a high resolution data base of the worlds continents
and ocean islands. It does not contain any lake boarders. This data
base was designed for maps with scales of 1 to 100,000.
Lakes,
islands in lakes, and ponds in islands were derived from World Data
Bank II. World Data Bank II is a copy of the CIA’s data base circa
1995.
Note:
In the original GSHHS data bases the outlines around contentents are
drawn as one single continuos line. The longest line is the outline
of Africa/Eurasia with over 1.4 million points. The longest line that
Geocart’s binary data base format can contain has 32,767 points.
All lines in the data base longer than 32,767 points have been split
into segments containing 32,767 points or less.
I
also downloaded all the World Data Bank II rivers, international boarders
and provinces and converted them to Geocart data base format. The source
for this data was:
http://crusty.er.usgs.gov/coast/getcoast.html
Warning:
The political bounds are circa 1995. There are outdated and alternate
boarders in these files. Please check them carefully before use.
To
order please contact me
by email or phone.
|