tick labels missing with scale_x_discrete()

[Wind]

Hi,

I could not make the tick labels displayed with the scale_x_discrete(breaks=..., labels=...).

Codes as following:

> library(ggplot2)

> dd <- data.frame(xx=paste("2010-",1:10,sep=""),yy=runif(10,0,5))

> dd

        xx        yy

1   2010-1 2.7251934

2   2010-2 3.1082813

3   2010-3 3.8652348

4   2010-4 2.1694184

5   2010-5 0.5826324

6   2010-6 2.6099141

7   2010-7 2.7677792

8   2010-8 3.1773559

9   2010-9 0.1525337

10 2010-10 2.4040786

> (c <- ggplot(dd,aes(xx,yy))+geom_bar(stat="identity"))

.........chart displayed ok.

c+scale_x_discrete(breaks=c(1,5,10),labels=c("a","b","c"))

......... there are correct breaks but no tick labels on the chart 

sessionInfo()

> > > R version 2.11.1 (2010-05-31) 

i386-pc-mingw32 

locale:

[1] LC_COLLATE=Chinese (Simplified)_People's Republic of China.936 

[2] LC_CTYPE=Chinese (Simplified)_People's Republic of China.936   

[3] LC_MONETARY=Chinese (Simplified)_People's Republic of China.936

[4] LC_NUMERIC=C                                                   

[5] LC_TIME=English_United States.1252                             

attached base packages:

[1] grid      stats     graphics  grDevices utils     datasets  methods  

[8] base     

other attached packages:

[1] ggplot2_0.8.8 proto_0.3-8   reshape_0.8.3 plyr_1.2.1   

> 

It seems that if x axis is continuous then everything would be OK.

Any suggestion would be appreciated.

Thanks in advance.

Wind

[Brandon Hurr]

This seems to work. 

ggplot(dd,aes(xx,yy))+geom_bar(stat="identity")+scale_x_discrete(breaks=c("2010-1","2010-5","2010-10"),labels=c("a","b","c"))

You'll need to reorder your xx though since 2010-10 comes after 2010-1 and not 2010-9.

Brandon

[Wind]

Thanks Brandon,

Your codes work exactly as what I need.

Regards,

Wind