[R-pkgs] ggplot2 - version 0.5.5

[hadley wickham]

ggplot2
===================================

ggplot2 is a plotting system for R, based on the grammar of graphics,
which tries to take the good parts of base and lattice graphics and
avoid bad parts. It takes care of many of the fiddly details
that make plotting a hassle (like drawing legends) as well as
providing a powerful model of graphics that makes it easy to produce
complex multi-layered graphics.

Find out more at http://had.co.nz/ggplot2, and check out the over 500
examples of ggplot in use.


Changes in version 0.5.5
----------------------------------------

Improvements:
	* ggplot now gives rather more helpful errors if you have
misspecified a variable name in the aesthetic mapping
	* changed default hline and vline intercepts to 0
	* added "count" output variable from stat_density for creating
stacked/conditional density plots
	* added parameters to geom_boxplot to control appearance of outlying points
	* overriding aesthetics with fixed values that have already been set
with aesthetics now actually works
	* slightly better names for xaxis and yaxis grobs
	* added aes_string function to make it easier to construction
aesthetic mapping specifications in functions
	* continuous scales now have labels argument so that you can manually
specify labels if desired
	* stat_density now calculates densities on a common grid across
groups.  This means that position_fill and position_stack now work
properly
	* if numeric, legend labels right aligned
	* polar coordinates much improved, and with better examples

Documentation:
	* fixed argument documentation for qplot
	* added (very) rudimentary documentation about what functions return
	* documentation now lists extra variables created by statistics

Bug fixes:
	* coord_flip now works with segment and all interval geoms
	* geom_errorbar now works in all coordinate systems
	* derived y axes (eg. on histogram) are now labelled correctly
	* fixed bug in stat_quantile caused by new output format from predict.rq
	* fixed bug if x or y are constant
	* fixed bug in histogram where sometimes lowest bar was omitted
	* fixed bug in stat_qq which prevent setting aesthetics
	* fixed bug in qplot(..., geom="density", position="identity")
	* fixed stat_qq so that unnecessary arguments are no longer passed to
the distribution function

Subtractions:
	* removed grid argument from ggsave, replaced by ggtheme(theme_bw)
	* removed add argument from qplot


Regards,

Hadley

-- 
http://had.co.nz/