[R] stacked barplot with positive and negatvie values
Paul Magdon
pmagdon at gwdg.de
Tue May 15 17:54:58 CEST 2007
Hello I'm trying to create a barplot with a couple of stacked positive
values and with one negative value for each group.
example:
trees<-c(20,30,10)
shrubs<-c(12,23,9)
veg<-c(2,3,4)
soil<-c(-100,-123,-89)
example1<-t(cbind(trees,shrubs,veg))
barplot(example1)
#this works so far
#but now:
example2<-t(cbind(trees,shrubs,veg,soil))
barplot(example2)
This shows no more stacked bars. But I want to keep the bars like
example1 and just add the negative values which have another scale
downwards.
So I tried:
barplot(example1,axes=F)
barplot(example2["soil",],add=T,axes=F)
axis(side=2,at=c(-150,-100,-50,0,10,20,30))
But I still does not work for the axis??
I would appriciate any kind of hint
Greetings
Paul Magdon
--
_______________________________________________________________________
BSc. Paul Magdon
-Research Assistant-
Institute of Forest Management
Forest Assessment & Remote Sensing, Forest Growth, Forest Planning
Faculty of Forest Sciences and Forest Ecology
Georg-August-University Göttingen
Phone +49 551 39 3573
pmagdon at gwdg.de / skype: paul.magdon
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