r - Custom UTM coordinates to ggmap -

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on maps obtained osm/cloudmade etc using get_map, how 1 change projection custom utm coordinate using proj4/crs?

can like

pc0.1<- sptransform(pc0,crs("+proj=utm +zone=32 +datum=wgs84 +units=m +no_defs+ellps=wgs84+towgs84=0,0,0"))

be used get_map or ggmap or ggplot in general? there way other changing utm match ll? thanks

i have done when using library(openstreetmap) command openproj, i'm not sure if exists in ggmap library. found openstreetmap gave me more additional functionality ggmap.


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