Running R version 2.6.1 under Linux, I'm trying to use the maps and
mapdata packages and the state database to produce a thematic map of the
USA. My problem is that cracks (white spaces) appear between some
states--e.g. between Colorado and Utah and between Michigan and Indiana.
The resulting visual impression is that the country is breaking up.
This occurs in all the projections I have tried: albers, mercator,
sinusoidal. An example of a command producing this effect is the following:
map("state", regions=names48, projection="albers", par=c(36,
53),
fill=T, col=rgb(red, green, blue, maxColorValue=255))
Suggests for filling the cracks would be very welcome.
-John
--
John P. Burkett
Department of Environmental and Natural Resource Economics
and Department of Economics
University of Rhode Island
Kingston, RI 02881-0808
USA
phone (401) 874-9195
The problem was solved by specifying resolution=0 in the map() function. Would that saving the union had always been so easy and bloodless. -John John P. Burkett wrote:> Running R version 2.6.1 under Linux, I'm trying to use the maps and > mapdata packages and the state database to produce a thematic map of the > USA. My problem is that cracks (white spaces) appear between some > states--e.g. between Colorado and Utah and between Michigan and Indiana. > The resulting visual impression is that the country is breaking up. This > occurs in all the projections I have tried: albers, mercator, > sinusoidal. An example of a command producing this effect is the > following: > map("state", regions=names48, projection="albers", par=c(36, 53), > fill=T, col=rgb(red, green, blue, maxColorValue=255)) > Suggests for filling the cracks would be very welcome. > -John >-- John P. Burkett Department of Environmental and Natural Resource Economics and Department of Economics University of Rhode Island Kingston, RI 02881-0808 USA phone (401) 874-9195