penaltyPlot {footballpenaltiesBL}

Plot an overview of all penalties taken by or against a men's Bundesliga player.

Description

Search for a player – either exact match or using fixed regular expressions – and create a plot of all penalties taken by or against this player as table with the date on the x-axis and the result on the y-axis.

Usage

penaltyPlot(player, goalkeeper = TRUE, exact = TRUE, pendat, includeMisses = TRUE,
  quarterlyAxis = TRUE, colours = NULL, main = NULL, sub = NULL, jitter = TRUE,
  yvalconst = FALSE)

Arguments

player

Character vector of length 1 which contains the full name of a player in pendat or a part thereof.

goalkeeper

Boolean, specifies whether player is searched for among goalkeepers (TRUE) or penalty takers (FALSE).

exact

Boolean, specifies whether to look for an exact match. If set to FALSE, grep(player, fixed = TRUE) is used to search for the player.

pendat

Name of a data set containing the penalties. The data set needs to follow the format of penalties.

includeMisses

Boolean, indicates whether to include penalties that missed the goal without the goalkeeper actively saving the ball.

quarterlyAxis

Boolean, to customise the x-axis. If TRUE, the beginning of every quarter of each year will be included on the axis, if FALSE, only the beginning of each year will be marked.

colours

Vector of length 3 that indicate the colours for saves, misses, and goals. The default value tries to reflect the relative success of each outcome for goalkeepers and penalty takers.

main

Main title of the plot. The default indicates who the penalties were taken by or against.

sub

Subtitle of the plot. The defaults indicates whether missed shots were included or not.

jitter

Boolean, should observations be jittered along the y-axis to avoid overlap?

yvalconst

Boolean, if TRUE, all penalties are plotted with a constant y-value (jitter may be added afterwards if jitter = TRUE). If FALSE, saves, misses, and goals are plotted with three different y-values (plus possible jitter). A legend is added to the top of the plot in that case.

Value

No value is returned, function is called for its side-effect of producing a plot.

Author(s)

Leo N. Geppert, with thanks to Marius Ötting for the inspiration.

See Also

penaltyPrint

Examples

data(penalties)
# Basic goalkeeper plot with quarterly and yearly marks. Depending on the duration of the career,
# quarterly marks may be too cluttered.
penaltyPlot('Illgner', pendat = penalties, exact = FALSE)
penaltyPlot('Illgner', pendat = penalties, exact = FALSE, quarterly = FALSE)

# similar plot for a penalty taker
penaltyPlot('Polster', pendat = penalties, exact = FALSE, quarterly = FALSE, goalkeeper = FALSE)

# demonstrate the effect of keeping the value on the y-axis constant as well as of excluding misses
penaltyPlot('Neuer', pendat = penalties, exact = FALSE, quarterly = FALSE)
penaltyPlot('Neuer', pendat = penalties, exact = FALSE, quarterly = FALSE, yvalconst = TRUE)
penaltyPlot('Neuer', pendat = penalties, exact = FALSE, quarterly = FALSE, includeMisses = FALSE)