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The actual contents of the file can be viewed below.

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+.gg                    Modify a ggplot or theme object by adding on
                        new components.
add_theme               Modify properties of an element in a theme
                        object
aes                     Define aesthetic mappings.
aes_                    Define aesthetic mappings from strings, or
                        quoted calls and formulas.
aes_colour_fill_alpha   Colour related aesthetics: colour, fill and
                        alpha
aes_group_order         Aesthetics: group
aes_linetype_size_shape
                        Differentiation related aesthetics: linetype,
                        size, shape
aes_position            Position related aesthetics: x, y, xmin, xmax,
                        ymin, ymax, xend, yend
annotate                Create an annotation layer.
annotation_custom       Annotation: Custom grob.
annotation_logticks     Annotation: log tick marks
annotation_map          Annotation: maps.
annotation_raster       Annotation: High-performance rectangular
                        tiling.
as.list.ggproto         Convert a ggproto object to a list
as_labeller             Coerce to labeller function
autoplot                Create a complete ggplot appropriate to a
                        particular data type
borders                 Create a layer of map borders.
calc_element            Calculate the element properties, by inheriting
                        properties from its parents
coord_cartesian         Cartesian coordinates.
coord_fixed             Cartesian coordinates with fixed relationship
                        between x and y scales.
coord_flip              Flipped cartesian coordinates.
coord_map               Map projections.
coord_polar             Polar coordinates.
coord_trans             Transformed cartesian coordinate system.
cut_interval            Cut up numeric vector into useful groups.
diamonds                Prices of 50,000 round cut diamonds
economics               US economic time series.
element_blank           Theme element: blank. This theme element draws
                        nothing, and assigns no space
element_line            Theme element: line.
element_rect            Theme element: rectangle.
element_text            Theme element: text.
expand_limits           Expand the plot limits with data.
facet_grid              Lay out panels in a grid.
facet_null              Facet specification: a single panel.
facet_wrap              Wrap a 1d ribbon of panels into 2d.
faithfuld               2d density estimate of Old Faithful data
format.ggproto          Format a ggproto object
fortify                 Fortify a model with data.
fortify-multcomp        Fortify methods for objects produced by
                        'multcomp'
fortify.lm              Supplement the data fitted to a linear model
                        with model fit statistics.
fortify.map             Fortify method for map objects.
fortify.sp              Fortify method for classes from the sp package.
geom_abline             Lines: horizontal, vertical, and specified by
                        slope and intercept.
geom_bar                Bars, rectangles with bases on x-axis
geom_bin2d              Add heatmap of 2d bin counts.
geom_blank              Blank, draws nothing.
geom_boxplot            Box and whiskers plot.
geom_contour            Display contours of a 3d surface in 2d.
geom_count              Count the number of observations at each
                        location.
geom_crossbar           Vertical intervals: lines, crossbars &
                        errorbars.
geom_density            Display a smooth density estimate.
geom_density_2d         Contours from a 2d density estimate.
geom_dotplot            Dot plot
geom_errorbarh          Horizontal error bars
geom_freqpoly           Histograms and frequency polygons.
geom_hex                Hexagon binning.
geom_jitter             Points, jittered to reduce overplotting.
geom_label              Textual annotations.
geom_map                Polygons from a reference map.
geom_path               Connect observations.
geom_point              Points, as for a scatterplot
geom_polygon            Polygon, a filled path.
geom_quantile           Add quantile lines from a quantile regression.
geom_raster             Draw rectangles.
geom_ribbon             Ribbons and area plots.
geom_rug                Marginal rug plots.
geom_segment            Line segments and curves.
geom_smooth             Add a smoothed conditional mean.
geom_spoke              A line segment parameterised by location,
                        direction and distance.
geom_violin             Violin plot.
ggplot                  Create a new ggplot plot.
ggproto                 Create a new ggproto object
ggsave                  Save a ggplot (or other grid object) with
                        sensible defaults
ggtheme                 ggplot2 themes
graphical-units         Graphical units
guide_colourbar         Continuous colour bar guide.
guide_legend            Legend guide.
guides                  Set guides for each scale.
hmisc                   Wrap up a selection of summary functions from
                        Hmisc to make it easy to use with
                        'stat_summary'.
is.ggproto              Is an object a ggproto object?
is.rel                  Reports whether x is a rel object
is.theme                Reports whether x is a theme object
label_bquote            Backquoted labeller
labeller                Generic labeller function for facets
labellers               Labeller functions
labs                    Change axis labels and legend titles
last_plot               Retrieve the last plot to be modified or
                        created.
layer                   Create a new layer
lims                    Convenience functions to set the axis limits.
luv_colours             'colors()' in Luv space.
map_data                Create a data frame of map data.
margin                  Define margins.
mean_se                 Calculate mean and standard errors on either
                        side.
midwest                 Midwest demographics.
mpg                     Fuel economy data from 1999 and 2008 for 38
                        popular models of car
msleep                  An updated and expanded version of the mammals
                        sleep dataset.
position_dodge          Adjust position by dodging overlaps to the
                        side.
position_fill           Stack overlapping objects on top of one
                        another.
position_identity       Don't adjust position
position_jitter         Jitter points to avoid overplotting.
position_jitterdodge    Adjust position by simultaneously dodging and
                        jittering
position_nudge          Nudge points.
presidential            Terms of 10 presidents from Eisenhower to Bush
                        W.
print.ggplot            Draw plot on current graphics device.
print.ggproto           Print a ggproto object
qplot                   Quick plot
rel                     Relative sizing for theme elements
resolution              Compute the "resolution" of a data vector.
scale_alpha             Alpha scales.
scale_colour_brewer     Sequential, diverging and qualitative colour
                        scales from colorbrewer.org
scale_colour_gradient   Smooth gradient between two colours
scale_colour_grey       Sequential grey colour scale.
scale_colour_hue        Qualitative colour scale with evenly spaced
                        hues.
scale_continuous        Continuous position scales (x & y).
scale_date              Position scale, date & date times
scale_identity          Use values without scaling.
scale_linetype          Scale for line patterns.
scale_manual            Create your own discrete scale.
scale_shape             Scale for shapes, aka glyphs.
scale_size              Scale size (area or radius).
scale_x_discrete        Discrete position.
seals                   Vector field of seal movements.
stat_ecdf               Empirical Cumulative Density Function
stat_ellipse            Plot data ellipses.
stat_function           Superimpose a function.
stat_identity           Identity statistic.
stat_qq                 Calculation for quantile-quantile plot.
stat_summary_2d         Bin and summarise in 2d (rectangle & hexagons)
stat_summary_bin        Summarise y values at unique/binned x x.
stat_unique             Remove duplicates.
theme                   Set theme elements
theme_update            Get, set and update themes.
translate_qplot_base    Translating between qplot and base graphics
translate_qplot_ggplot
                        Translating between qplot and ggplot
translate_qplot_lattice
                        Translating between qplot and lattice
txhousing               Housing sales in TX.
update_geom_defaults    Modify geom/stat aesthetic defaults for future
                        plots
update_labels           Update axis/legend labels