In addition, there are
now three predefined librefs for libraries that contain map data sets:
MAPS
points to updated
versions of the traditional map data sets that are provided by SAS,
just as in the past. This libref existed prior to the second maintenance
release for SAS 9.3.
MAPSSAS
points to the same
updated map data sets as the MAPS libref. This libref is new in the
second maintenance release for SAS 9.3.
MAPSGFK
points to map data
sets based on the digital maps from GfK GeoMarketing, the single source
for this map data. These data sets are covered by the GfK GeoMarketing
copyright. See
http://support.sas.com/mapsonline/gfklicense. This libref is also new in the second maintenance release
for SAS 9.3.
These new single-source
data sets ensure that the map data is accurate and uniform for the
entire world. Additional map data obtained from GfK GeoMarketing GmbH
matches up seamlessly with
SAS/GRAPH map data. GfK GeoMarketing GmbH
is solely responsible for all updates and changes to their map data.
This includes political boundary updates which were up to this time
hard to obtain. SAS offers the ability to download the updates to
map data via SAS Maps Online (
http://support.sas.com/rnd/datavisualization/mapsonline/html/downloads.html).
Note: Using the GfK map data sets
with an existing application that currently uses the traditional map
data sets requires modification to the application. Without these
modifications, using the GfK map data could cause unexpected results.
For more information
to aid in modifying existing applications, see Differences between GfK and Traditional Map Data Sets in SAS/GRAPH: Reference.
You can redefine the
MAPS libref to point to GfK map data sets by using the MAPS= system
option.
For more information,
see MAPS= System Option in SAS/GRAPH: Reference.