[R] Adjusting axis limits in ggplot2.

[Rolf Turner]

I'm having trouble adjusting axis limits in ggplot2 when the variable
corresponding to that axis is a factor.  I have attached a minimal
reproducible example in the file demo.txt.

The result (see it by sourcing demo.txt and printing ldCiPlot) is fine
except that I would like the y-axis limits to be 0 and 7 rather than
0.5 and 6.5.

I tried adding xlim(0,7) ("x" because I do a coord_flip()) but this 
causes the error

> Error: Discrete value supplied to continuous scale

to be thrown.  I have Googled around quite a bit and have not managed to 
find anything useful that I can understand.  I'm sure there is a simple
solution, but I can't find it.  Can anyone point me in the right 
direction?  Ta.

cheers,

Rolf Turner

-- 
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276

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