viewport

[Sorn....@dpi.vic.gov.au]

Hi,

I am following Hadley Wickham's code from his book on ggplot2 on page 152. I tried to create the following viewports but got the error messages (see below)

# A viewport in the top right
vp4 <- viewport(x = 1, y = 1, just = c("top", "right"))
# Bottom left
vp5 <- viewport(x = 0, y = 0, just = c("bottom", "right"))


Error Messages

> vp4 <- viewport(x = 1, y = 1, just = c("top", "right"))
Error in valid.charjust(just) : Invalid horizontal justification
> # Bottom left
> vp5 <- viewport(x = 0, y = 0, just = c("bottom", "right"))
Error in valid.charjust(just) : Invalid horizontal justification

I am using R 2.10.0

Thank you for your help.

Cheers

Sorn

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[Dennis Murphy]

Works for me after switching the labels in just():

> (a <- qplot(date, unemploy, data = economics, geom = "line"))
> (b <- qplot(uempmed, unemploy, data = economics) +
+   geom_smooth(se = F))
> (c <- qplot(uempmed, unemploy, data = economics, geom="path"))
>
> # A viewport that takes up the entire plot device
> vp1 <- viewport(width = 1, height = 1, x = 0.5, y = 0.5)
> vp1 <- viewport()
>
> # A viewport that takes up half the width and half the height,
> # located in the middle of the plot.
> vp2 <- viewport(width = 0.5, height = 0.5, x = 0.5, y = 0.5)
> vp2 <- viewport(width = 0.5, height = 0.5)
>
> # A viewport that is 2cm x 3cm located in the center
> vp3 <- viewport(width = unit(2, "cm"), height = unit(3, "cm"))

>
> # A viewport in the top right

> vp4 <- viewport(x = 1, y = 1, just = c("right", "top"))
> # Bottom left
> vp5 <- viewport(x = 0, y = 0, just = c("right", "bottom"))

[dump to pdf file omitted]

> sessionInfo()
R version 2.10.1 Patched (2010-01-01 r50884)
i386-pc-mingw32

locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252  
[3] LC_MONETARY=English_United States.1252
[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_0.8.5 digest_0.4.2  reshape_0.8.3 plyr_0.1.9    proto_0.3-8 

loaded via a namespace (and not attached):
[1] tools_2.10.1

 

 

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[Sorn....@dpi.vic.gov.au]

Thanks Dennis. It works for me as well now after making the switch in just().

Dennis Murphy <djm...@gmail.com> Sent by: ggp...@googlegroups.com 05/01/2010 02:20 PM

To Sorn....@dpi.vic.gov.au cc ggp...@googlegroups.com Subject Re: viewport