point size in magic chart relative to sample size/variance
Closed this issue · 1 comments
earosenthal commented
As requested on the SoCal R zoom, I'd like to suggest that the magic chart be able to plot point sizes relative to the samples size or variance at the locations (or any other measure related to the locations)
spsanderson commented
Function:
#' Gartner Magic Chart - Plotting of two continuous variables
#'
#' @author Steven P. Sanderson II, MPH
#'
#' @description
#' Plot a Gartner Magic Chart of two continuous variables
#'
#' @param .data The data set you want to plot
#' @param .x_col The x-axis for the plot
#' @param .y_col The y-axis for the plot
#' @param .plot_col_size The default is NULL, if you want to size the dots by
#' a column in the data.frame/tibble then enter the column name here.
#' @param .y_lab The y-axis label
#' @param .x_lab The x-axis label
#' @param .plt_title The title of the plot
#' @param .tr_lbl The top right label
#' @param .tl_lbl The top left label
#' @param .bl_lbl The bottom left label
#' @param .br_lbl The bottom right label
#' @param .point_size The column you want to pass as a point size to `ggplot2`
#'
#' @details
#' - Supply a data frame with at least two continuous variables to plot against
#' each other
#'
#' @examples
#' library(dplyr)
#'
#' data_tbl <- tibble(
#' x = rnorm(100, 0, 1),
#' y = rnorm(100, 0, 1),
#' z = abs(x) + abs(y)
#' )
#'
#' gartner_magic_chart_plt(
#' .data = data_tbl,
#' .x_col = x,
#' .y_col = y,
#' .point_size = z,
#' .x_lab = "los",
#' .y_lab = "ra",
#' .plt_title = "tst",
#' .tr_lbl = "High RA-LOS",
#' .tl_lbl = "High RA",
#' .bl_lbl = "Leader",
#' .br_lbl = "High LOS"
#' )
#'
#' gartner_magic_chart_plt(
#' .data = data_tbl,
#' .x_col = x,
#' .y_col = y,
#' .point_size = NULL,
#' .x_lab = "los",
#' .y_lab = "ra",
#' .plt_title = "tst",
#' .tr_lbl = "High RA-LOS",
#' .tl_lbl = "High RA",
#' .bl_lbl = "Leader",
#' .br_lbl = "High LOS"
#' )
#'
#' @return
#' A `ggplot` plot
#'
#' @export
#'
#'
gartner_magic_chart_plt <- function(.data,
.x_col,
.y_col,
.point_size_col = NULL,
.y_lab,
.x_lab,
.plt_title,
.tl_lbl,
.tr_lbl,
.br_lbl,
.bl_lbl) {
# Tidyeval
x_var_expr <- rlang::enquo(.x_col)
y_var_expr <- rlang::enquo(.y_col)
x_lab_expr <- rlang::enquo(.x_lab)
y_lab_expr <- rlang::enquo(.y_lab)
title_expr <- rlang::enquo(.plt_title)
tl_lab_expr <- rlang::enquo(.tl_lbl)
tr_lab_expr <- rlang::enquo(.tr_lbl)
bl_lab_expr <- rlang::enquo(.bl_lbl)
br_lab_expr <- rlang::enquo(.br_lbl)
point_size <- rlang::enquo(.point_size_col)
# Checks
if (!is.data.frame(.data)) {
stop(call. = FALSE, "(.data) is not a data.frame/tibble. Please supply.")
}
if (rlang::quo_is_missing(x_var_expr)) {
stop(call. = FALSE, "(.x_col) is missing. Please supply.")
}
if (rlang::quo_is_missing(y_var_expr)) {
stop(call. = FALSE, "(.y_col) is missing. Please supply.")
}
if (rlang::quo_is_missing(x_lab_expr)) {
stop(call. = FALSE, "(.x_lab) is missing. Please supply.")
}
if (rlang::quo_is_missing(y_lab_expr)) {
stop(call. = FALSE, "(.y_lab) is missing. Please supply.")
}
if (rlang::quo_is_missing(title_expr)) {
stop(call. = FALSE, "(.plt_title) is missing. Please supply.")
}
if (rlang::quo_is_missing(point_size)) {
point_size = 1
}
df <- tibble::as_tibble(.data) %>%
dplyr::select({{ x_var_expr }}, {{ y_var_expr }}) %>%
tibble::as_tibble() %>%
purrr::set_names("x", "y")
xd <- df %>%
dplyr::pull(x)
yd <- df %>%
dplyr::pull(y)
data_tbl <- dplyr::as_tibble(.data)
plt <- data_tbl %>%
ggplot2::ggplot(
ggplot2::aes(
x = x
, y = y
)
) +
ggplot2::scale_x_continuous(
expand = c(0, 0)
, limits = c(
min(xd * 1.1)
, max(xd * 1.1)
)
) +
ggplot2::scale_y_continuous(
expand = c(0, 0)
, limits = c(
min(yd * 1.1)
, max(yd * 1.1)
)
) +
ggplot2::ylab( {{y_lab_expr}} ) +
ggplot2::xlab( {{x_lab_expr}} ) +
ggplot2::labs(
title = {{title_expr}}
, subtitle = "Red Dot Indicates Zero Variance"
) +
ggplot2::theme(
legend.position = "none"
, axis.title.x = ggplot2::element_text(
hjust = 0
, vjust = 4
, colour = "darkgrey"
, size = 10
, face = "bold"
)
, axis.title.y = ggplot2::element_text(
hjust = 0
, vjust = 0
, color = "darkgrey"
, size = 10
, face = "bold"
)
, axis.ticks = ggplot2::element_blank()
, panel.border = ggplot2::element_rect(
colour = "lightgrey"
, fill = NA
, size = 4
)
) +
ggplot2::annotate(
"rect"
, xmin = 0
, xmax = max(xd * 1.1)
, ymin = 0
, ymax = max(yd * 1.1)
, fill = "#F8F9F9"
) +
ggplot2::annotate(
"rect"
, xmin = 0
, xmax = min(xd * 1.1)
, ymin = 0
, ymax = min(yd * 1.1)
, fill = "#F8F9F9"
) +
ggplot2::annotate(
"rect"
, xmin = 0
, xmax = min(xd * 1.1)
, ymin = 0
, ymax = max(yd * 1.1)
, fill = "white"
) +
ggplot2::annotate(
"rect"
, xmin = 0
, xmax = max(xd * 1.1)
, ymin = 0
, ymax = min(yd * 1.1)
, fill = "white"
) +
ggplot2::geom_hline(
yintercept = 0
, color = "lightgrey"
, size = 1.5
) +
ggplot2::geom_vline(
xintercept = 0
, color = "lightgrey"
, size = 1.5
) +
# Where you want to be
ggplot2::geom_point(
data = data.frame(x = 0, y = 0)
, ggplot2::aes(color = 'red')
, size = 3
)
plt <- if(rlang::quo_is_missing(point_size)){
plt <- plt +
ggplot2::geom_point(
color = "#2896BA"
, size = 2
)
} else {
plt <- plt +
ggplot2::geom_point(
color = "#2896BA",
ggplot2::aes(size = {{point_size}})
)
}
# If statements to add inside labels should they exist
# Top right label
if (!rlang::quo_is_missing(tr_lab_expr)) {
plt <- plt +
ggplot2::geom_label(
ggplot2::aes(
x = 0.80 * max(xd),
y = 0.95 * max(yd),
label = {{ tr_lab_expr }}
),
label.padding = ggplot2::unit(2, "mm"),
fill = "lightgrey",
color = "black"
)
}
# Top left label
if (!rlang::quo_is_missing(tl_lab_expr)) {
plt <- plt +
ggplot2::geom_label(
ggplot2::aes(
x = 0.95 * min(xd),
y = 0.95 * max(yd),
label = {{ tl_lab_expr }}
),
label.padding = ggplot2::unit(2, "mm"),
fill = "lightgrey",
color = "black"
)
}
# Bottom left label
if (!rlang::quo_is_missing(bl_lab_expr)) {
plt <- plt +
ggplot2::geom_label(
ggplot2::aes(
x = 0.95 * min(xd),
y = 0.95 * min(yd),
label = {{ bl_lab_expr }}
),
label.padding = ggplot2::unit(2, "mm"),
fill = "lightgrey",
color = "black"
)
}
# Bottom right label
if (!rlang::quo_is_missing(br_lab_expr)) {
plt <- plt +
ggplot2::geom_label(
ggplot2::aes(
x = 0.80 * max(xd),
y = 0.95 * min(yd),
label = {{ br_lab_expr }}
),
label.padding = ggplot2::unit(2, "mm"),
fill = "lightgrey",
color = "black"
)
}
return(plt)
}Example:_
library(dplyr)
data_tbl <- tibble(
x = rnorm(100, 0, 1),
y = rnorm(100, 0, 1),
z = abs(x) + abs(y)
)
gartner_magic_chart_plt(
.data = data_tbl,
.x_col = x,
.y_col = y,
.point_size = z,
.x_lab = "los",
.y_lab = "ra",
.plt_title = "tst",
.tr_lbl = "High RA-LOS",
.tl_lbl = "High RA",
.bl_lbl = "Leader",
.br_lbl = "High LOS"
)
gartner_magic_chart_plt(
.data = data_tbl,
.x_col = x,
.y_col = y,
.x_lab = "los",
.y_lab = "ra",
.plt_title = "tst",
.tr_lbl = "High RA-LOS",
.tl_lbl = "High RA",
.bl_lbl = "Leader",
.br_lbl = "High LOS"
)
