eyetools (version 0.9.2)

plot_heatmap: Plot heatmap of raw data

Description

Plots a heatmap of raw data.

Usage

plot_heatmap(
  data = NULL,
  pID_values = NULL,
  trial_values = NULL,
  bg_image = NULL,
  res = c(0, 1920, 0, 1080),
  flip_y = FALSE,
  plot_type = "density",
  alpha_range = c(0.1, 0.8),
  plot_header = FALSE
)

Value

a plot of the raw data

Arguments

data

data in standard raw data form (time, x, y, trial)

pID_values

specify particular values within 'pID' to plot data from certain participants

trial_values

specify particular values within 'trial' to plot data from certain trials

bg_image

The filepath of a PNG image to be added to the plot, for example to show a screenshot of the task.

res

resolution of the display to be shown, as a vector (xmin, xmax, ymin, ymax)

flip_y

reverse the y axis coordinates (useful if origin is top of the screen)

plot_type

Specify the nature of the data displayed. Either "density" (default) or "hex"

alpha_range

a pair of values between 0 and 1. The first is a cut off, whereby lower values are not displayed. The second value sets the transparancy of the visible poitns.

plot_header

display the header title text which explains graphical features of the plot.

Examples

# \donttest{
data <- combine_eyes(HCL)
# plot all trials data
plot_heatmap(data, pID_values = 118, alpha_range = c(0.3,0.8))

#plot one trial
plot_heatmap(data, trial_values = 1)

# }