ggspraychart: Generate spray charts with ggplot2

In Fackz/baseball: Functions for acquiring and analyzing baseball data

Description

This function allows you to create spray charts with ggplots given a data frame with batted ball location coordinates.

Usage

ggspraychart(data, x_value = "hc_x", y_value = "-hc_y",
  fill_value = NULL, fill_palette = NULL, fill_legend_title = NULL,
  density = FALSE, bin_size = 15, point_alpha = 0.75,
  point_size = 2, frame = NULL)

Arguments

data	A data frame that includes batted ball coordinates. Typically, this coordinates will come from the GameDay xml feed or downloads from baseballsavant.com
x_value	The x coordindate. Typically hc_x.
y_value	The y coordinate. Typically hc_y. You generally need the inverse or negative of the hc_y values, so it is recommended you calculate before plotting.
fill_value	The categorical variable that you want the geom_points to base the fill on. Pass as a string. If left blank, defaults to blue.
fill_palette	An object containing a customer palette to be used with ggplto2::scale_fill_manual.
fill_legend_title	A string containing a custom legend title to be used with ggplto2::scale_fill_manual.
density	Chooses between a 2d density plot or a point plot. Defaults to FALSE.
bin_size	Size of bins used when building a density plot. Defaults to 15.
point_alpha	Alpha value whenever geom_point is used. Deaults to .75. Recommend .3 for density plots. To remove points on density points set use point_alpha = 0.
point_size	Set the size of geom_point if used.
frame	Variable to use as the frame argument if using gganimate to create animated plots. For density plots be sure your variable is a factor.

Examples

## Not run: 
ggspraychart(df, x_value = "hc_x", y_value = "-hc_y", fill_value = "events")

## End(Not run)

Fackz/baseball documentation built on June 25, 2019, 12:05 a.m.