Geoscience Reference
In-Depth Information
Relief
Hydrography
Elevation raster
-
Spot heights
Water levels
Base layers
are nec-
essary and sufficient
for hypsometric
mapping
Polygons (glaciers,
cliffs etc.)
Polygons (lakes, seas,
reservoirs, etc.)
Lines (gully edges,
steep slopes, dry chan-
nels etc.)
Lines (rivers, brooks,
channels etc.)
Points (volcanoes, ho-
les, mounds etc.)
Points (mineral springs
etc.)
Auxiliary layers
are
used for relief repre-
sentation, can be de-
rived from base ones,
but are maintained in
database for visual-
izeation efficiency
Contours, intermediate contours, hatches, hill-
shading etc.
Analytical layers
are
not used for relief
representation, but
are needed for gener-
aliszation and analy-
sis
Slope, aspect, curvature (profile, plan etc.), flow
direction, flow accumulation etc.
Table 1:
Database content for multiscale hypsometric mapping
Logical structure of the database should be designed to support the full
scale range and keeping scale series in mind. To implement multiple repre-