ggplot2 0.9.1

[Hadley Wickham]

Should be available from a CRAN mirror near you in the very near
future. This is mostly a bug fix release, so I'd highly recommend
upgrading from 0.9.0 as soon as possible!

The highlight in this release is a new visual testing system by
Winston, which makes it easier for us to pick up news bugs very very
quickly.

Hadley

ggplot2 0.9.1
----------------------------------------------------------------

MINOR FEATURES

* `ggstructure` and `ggorder`, which call `ggpcp`, no longer have a
`scale` argument since `ggpcp` does not have one.

* built in datasets have been checked to make sure they use characters,
factors and ordered factors appropriately

* `geom_raster` and `annotation_raster` gain new `interpolate` argument for
controlling whether or not rasters are interpolated

* Added `plot` as an alias for `print` for ggplot objects.

* Visual tests have been moved to /visual_test and modified to work with the
vtest package. (Thanks to Winston Chang)

* `geom_dotplot`: now supports stacking. It uses `stackgroups = TRUE` instead
of the usual position="stack", for technical reasons. It also will stack in
the x direction when binning along the y axis. (Thanks to Winston Chang)

* `geom_rug` now allows control over which sides to put the rug lines, with
the `sides` argument. (Thanks to Winston Chang)

* `annotation_logticks`: a new geom that adds tick marks on the inside of the
plotting rectangle that have diminishing spacing for log-10 axes. (Thanks
to Winston Chang)

* Coordinate expansion is now handled by an interaction of the scale and
coord, rather than by the scale only. Also, the `wise` argument is no
longer needed. (Thanks to Winston Chang and Kohske Takahashi)

BUG FIXES

* `facet_grid` no longer drops duplicate cases (Fixes #443)

* `munch_range` properly reports the x and y range. (Thanks to Winston Chang)

* `stat_bin2d` handles data with NA in the position variables. Error was
triggered when scale was limited to a range smaller than the range of
the data. (Bug reported by Tao Gao; diagnosed and fixed by Brian Diggs)

* `scale_*_identity` will now produce a legend when `guide = "legend"` and no
breaks or labels are supplied (Fixes #453)

* `geom_map` now works with `coord_map` (Fixes #480)

* discrete scales now accept named vectors of labels again (Fixes #427)

* `geom_raster` works better with categorical input (Fixes #463)

* `qplot` no longer uses non-standard evaluation for geom/stat arguments - it
doesn't seem to be needed and was causing problems when qplot was used in
special environments (e.g. in knitr) (Fixes #377)

* `coord_train.polar` and `coord_train.trans` remove NAs from breaks.
(Thanks to Winston Chang. Fixes #422)

* Theta breaks with `coord_polar` have equal angular spacing. (Thanks to
Winston Chang and Kohske Takahashi. Fixes #288)

* Empty data frames are now handled correctly: layers with empty data are
dropped silently, instead of inheriting data from the plot. (Thanks to
Winston Chang. Fixes #31, #332, #506 and #507)

* The alpha value of set colours is now preserved by default. To return to the
old behaviour, set `alpha = 1`. (Fixes #475)

* `scale_*_manual` will throw an error if you have too few values. (Fixes
#512)

* `facet_wrap` gets the `as.table` argument back. (Fixes #497)

* `resolution` now returns 1 when range is zero. (Fixes #526)

* Titles are displayed above legend when legend is on top. (Thanks to
Kohske Takahashi. Fixes #432)

* Specifying breaks outside coord limits works. (Thanks to Kohske Takahashi.
Fixes #430)

* `renames_aes` now uses exact matching instead of partial matching. (Thanks
to Winston Chang. Fixes #529)

* `labs()` now works with American spellings. (Thanks to Winston Chang.
Fixes #521)

* `stat_density2d` sets the limits for `kde2d` from the limits of the x and
y scales. (Thanks to Winston Chang)


--
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/