Theme Elements for Image Grobs

In conjunction with the ggplot2::theme system, the following element_ functions enable images in non-data components of the plot, e.g. axis text.

• element_mlb_logo(), element_mlb_scoreboard_logo(), element_mlb_dot_logo(): draws MLB team logos instead of their abbreviations.

• element_mlb_dark_cap_logo() and element_mlb_light_cap_logo(): draws MLB team cap logos instead of their abbreviations.

• element_mlb_headshot(): draws MLB player headshots instead of their MLB IDs

• element_path(): draws images from valid image URLs instead of the URL.

Usage

element_mlb_logo(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

element_mlb_scoreboard_logo(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

element_mlb_dot_logo(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

element_mlb_dark_cap_logo(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

element_mlb_light_cap_logo(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

element_mlb_headshot(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

element_mlb_dot_headshot(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

element_path(
  alpha = NULL,
  colour = NA,
  hjust = NULL,
  vjust = NULL,
  color = NULL,
  size = 0.5
)

Arguments

alpha

The alpha channel, i.e. transparency level, as a numerical value between 0 and 1.

colour, color

The image will be colorized with this color. Use the special character "b/w" to set it to black and white. For more information on valid color names in ggplot2 see https://ggplot2.tidyverse.org/articles/ggplot2-specs.html?q=colour#colour-and-fill.

hjust, vjust

The horizontal and vertical adjustment respectively. Must be a numerical value between 0 and 1.

size

The output grob size in cm (!).

Value

An S3 object of class element.

Details

The elements translate MLB team abbreviations or MLB player IDs into logo images or headshots, respectively.

See also

geom_mlb_logos(), geom_mlb_headshots(), and geom_from_path() for more information on valid team abbreviations, player ids, and other parameters.

Examples

# \donttest{
library(mlbplotR)
library(ggplot2)

team_abbr <- valid_team_names()
# remove league logos from this example
team_abbr <- team_abbr[!team_abbr %in% c("AL", "NL", "MLB")]

df <- data.frame(
  random_value = runif(length(team_abbr), 0, 1),
  teams = team_abbr
)

# use logos for x-axis
ggplot(df, aes(x = teams, y = random_value)) +
  geom_col(aes(color = teams, fill = teams), width = 0.5) +
  scale_color_mlb(type = "secondary") +
  scale_fill_mlb(alpha = 0.4) +
  theme_minimal() +
  theme(axis.text.x = element_mlb_logo())


# use logos for y-axis
ggplot(df, aes(y = teams, x = random_value)) +
  geom_col(aes(color = teams, fill = teams), width = 0.5) +
  scale_color_mlb(type = "secondary") +
  scale_fill_mlb(alpha = 0.4) +
  theme_minimal() +
  theme(axis.text.y = element_mlb_logo())


#############################################################################
# Headshot Examples
#############################################################################
library(mlbplotR)
library(ggplot2)


dfh <- data.frame(
  random_value = runif(9, 0, 1),
  player_id = c("594798",
                  "592450",
                  "605141",
                  "665742",
                  "545361",
                  "665487",
                  "571448",
                  "0",
                  "543037")
)

# use headshots for x-axis
ggplot(dfh, aes(x = player_id, y = random_value)) +
  geom_col(width = 0.5) +
  theme_minimal() +
  theme(axis.text.x = element_mlb_headshot())


# use headshots for y-axis
ggplot(dfh, aes(y = player_id, x = random_value)) +
  geom_col(width = 0.5) +
  theme_minimal() +
  theme(axis.text.y = element_mlb_headshot())

# }