Line Chart

Line Chart

line_chart(
  func,
  data_bands,
  data_lines,
  show_bands = "Y",
  show_points = "N",
  line_size = 0.6,
  line_type = "solid",
  xmin,
  xmax,
  ymin,
  ymax,
  xbreaks,
  ybreaks,
  xlab,
  ylab,
  legend_title
)

Arguments

func

the name of a function, or a call or an expression written as a function of x

data_bands

(data.frame) a data frame with 3 variables named the following:

  1. level: level each band represents

  2. ystart: starting point of each band

  3. yend: ending point of each band

  4. col: color of each band

data_lines

(data.frame) a data frame with 7 variables named the following:

  1. stage: stage each line represents

  2. xstart: x-axis starting point of each line

  3. xend: x-axis ending point of each line

  4. y: y-axis position of each line

  5. col: color of each line

  6. xpos: x-axis position of each annotation (relative to xstart)

  7. ypos: y-axis position of each annotation (relative to y)

show_bands

(character) a logical value indicating whether to show bands in the plot (Y, N)

show_points

(character) a logical value indicating whether to show points at the start of the arrows (Y, N)

line_size

(numeric) size of the line

line_type

(character) type of the line

xmin

(numeric) starting point of x axis

xmax

(numeric) ending point of x axis

ymin

(numeric) starting point of y axis

ymax

(numeric) ending point of y axis

xbreaks

(numeric) x axis breaks

ybreaks

(numeric) y axis breaks

xlab

(character) x axis label

ylab

(character) y axis label

legend_title

(character) legend title

Value

a ggplot object

Examples

func <- function(x) 47.982 - 0.0305 * x - 0.57525 * x^2 + 0.0245 * x^3

line_chart(
  func = func,
  data_bands = data_bands,
  data_lines = data_lines,
  xmin = 0,
  xmax = 14.2,
  ymin = 0,
  ymax = 50,
  xbreaks = seq(0, 14, 2),
  ybreaks = seq(0, 50, 5),
  xlab = "Years Since Onset",
  ylab = "Functional Score",
  legend_title = "Severity: "
)
#> Scale for x is already present.
#> Adding another scale for x, which will replace the existing scale.