[R] How to access the attributes of a ggplot?
h.wickham at gmail.com
Mon Apr 7 22:04:34 CEST 2008
> I found 'ggopts', but it only returns some of the properties. Say I
> want to get the x- and y-axis limits, the tickmark locations, legend
> current position, the legend box and background color and set them to
> new values.
> Are these properties easily accessible (and modifiable) from the object?
Some of them are:
* the x and y axis limits are properties of the scales (e.g. +
* the tickmark locations and labels are also properties of the scales
(e.g. + scale_x_continuous(breaks=c(5, 10), labels=c("five","ten"))
* the legend position is set by ggopt()
Some of them aren't:
* legend fill and outline colours can only be changed by modifying
the underlying grid object - see the last chapter of the ggplot book
to see how to do this.
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