[R] ctree (party) changing font sizes in plots

[Achim Zeileis]

On Fri, 20 Nov 2009, Sam Thomas wrote:

> When plotting Binary Trees (ctree) from the party package, is there a
> way to adjust the font sizes of the leaves?

Currently, this is not implemented in "party". In interactive usage it is 
not easy to change the fontsize. If you're printing to PDF, you could 
easily increase/decrease the height and width which will decrease/increase 
the relative size of the text, respectively. Not elegant but works.

Alternatively, you could obtain the "partykit" package from R-Forge which 
has a new implementation of general infrastructure for tree. With that you 
can do

library("partykit")
irisct <- ctree(Species ~ ., data = iris)
plot(irisct, gp = gpar(fontsize = 20))

Note that "party" and "partykit" should not be used together, partykit has 
a slightly enhanced/modified ctree() function.

hth,
Z

>
>
> require(party)
>
> irisct <- ctree(Species ~ ., data = iris)
>
> plot(irisct)
>
>
>
> I want to adjust the font sizes for "Node 2", "Node 5", etc.  I'd also
> like to be able to adjust the font sizes for the x-axis and y-axis
> labels of the histograms.
>
>
>
> Thanks,
>
>
>
> Sam Thomas
>
> Revelant Technologies, LLC.
>
> sam.thomas at revelanttech.com <mailto:sam.thomas at revelanttech.com>
>
> 317-696-9214
>
>
>
>
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>
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