error map with ggplot2

[r tremeaud]

i'm trying draw a map with ggplot2
Code:
suisse <- readShapePoly("/Users/raphaeltremeaud/Desktop/Rsig/data/
CHE_adm/CHE_adm1.shp",proj4string=CRS("+proj=longlat +datum=WGS84"))
Sys.setlocale("LC_ALL", locale="C")
suisse <- fortify.SpatialPolygonsDataFrame(suisse,region="NAME_1")

###using merge
Code:
'data.frame': 27 obs. of 2 variables:
$ dat : Factor w/ 27 levels "","Aargau","Appenzell Ausserrhoden",..:
1 2 3 4 5 6 7 8 9 10 ...
$ Freq: int 1 29 10 1 20 28 108 14 27 2 ...
suisse.fusion <- merge(suisse,dat, by.x = "id", by.y = "dat")
suisse.fusion <- suisse.fusion[order(suisse.fusion$order), ]

when i draw using ggplot2 there is an error message "state of graphics
wrong"
Code:
ggplot(suisse.fusion, aes(long, lat)) +
geom_polygon(aes(group=id, fill = Freq))

#####here is my problems
Erreur dans recordGraphics(drawGTree(x), list(x = x),
getNamespace("grid")) :
'etat des graphiques incorrect###<- "state of graphics wrong"
what does it mean ?
think you

[Hadley Wickham]

You're more likely to get a response if you provide a reproducible
example (https://github.com/hadley/devtools/wiki/Reproducibility)

Hadley

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