There are several data sets
in the MAPSSAS library that enable you to easily label maps. These
data sets contain coordinates for map features such as cities, but
cannot be used as map data sets.
contains the coordinates
of the visual center of each state in the U.S. and Washington, D.C..
It also contains coordinates in the ocean for states that are too
small to contain a label. There are two pairs of variables for locating
labels using Annotate data sets. The X and Y variables are projected
and can be used with the MAPS.US and MAPS.USCOUNTY data sets. The
LONG and LAT variables are unprojected longitude and latitude in radians
and can be used with the MAPS.STATES, MAPS.COUNTIES, and MAPS.COUNTY
contains the locations
of selected cities in the U.S. Many city names occur in more than
one state, so you might have to subset by state to avoid duplication.
There are two pairs of variables for locating labels using Annotate
data sets. The X and Y variables contain projected coordinates and
can be used with the MAPS.US and MAPS.USCOUNTY data sets. The LONG
and LAT variables contain the unprojected longitude and latitude in
radians. These can be used to place labels on the MAPS.STATES, MAPS.COUNTIES,
or MAPS.COUNTY data sets.
observations can be listed in the output data set. This occurs because
the map data set includes towns, villages, hamlets, and other non-city
areas that can share the same name with a city. Differentiate the
output with the FEATYPE variable, which contains the area type.
For details about each of these data sets, see the
MAPS.METAMAPS or the MAPSSAS.METAMAPS data set.