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lorang
2011 Sep 15
0
RGoogleMpas error
...t;], lon = mymarkers[,"lon"])
#download the map:
MyMap <- GetMap.bbox(bb$lonR, bb$latR, destfile = "DC.png", GRAYSCALE =T,
markers = mymarkers);
#determine the max zoom, so that all points fit on the plot
# (not necessary in this case):
zoom <- min(MaxZoom(latrange=bb$latR,lonrange=bb$lonR));
#plot:
png("OverlayTest.png",640,640);
tmp <- PlotOnStaticMap(MyMap,lat = mymarkers[,"lat"], lon = mymarkers[,"lon"],
cex=1.5,pch=20,col=c('blue', 'green', 'red'), add=F);
tmp <- PlotOnStaticMap(MyMap,lat = mymarkers[,"lat...