Lasagna plot of glucose values for 1 subject aligned across times of day

Usage

plot_lasagna_1subject(
  data,
  lasagnatype = c("unsorted", "timesorted", "daysorted"),
  limits = c(50, 500),
  midpoint = 105,
  LLTR = 70,
  ULTR = 180,
  dt0 = NULL,
  inter_gap = 45,
  tz = "",
  color_scheme = c("blue-red", "red-orange"),
  log = F,
  static_or_gui = c("ggplot", "plotly")
)

Arguments

data: DataFrame object with column names "id", "time", and "gl".
lasagnatype: Default: "unsorted". String corresponding to plot type, currently supported options are 'unsorted' for an unsorted single-subject lasagna plot, 'timesorted' for a lasagna plot with glucose values sorted within each time point across days, and 'daysorted' for a lasagna plot with glucose values sorted within each day across time points.
limits: The minimal and maximal glucose values for coloring grid which is gradient from blue (minimal) to red (maximal), see scale_fill_gradient2)
midpoint: The glucose value serving as midpoint of the diverging gradient scale (see scale_fill_gradient2). The default value is 105 mg/dL. The values above are colored in red, and below in blue in the default color_scheme, which can be adjusted.
LLTR: Lower Limit of Target Range, default value is 70 mg/dL.
ULTR: Upper Limit of Target Range, default value is 180 mg/dL.
dt0: The time frequency for interpolated aligned grid in minutes, the default will match the CGM meter's frequency (e.g. 5 min for Dexcom).
inter_gap: The maximum allowable gap (in minutes) for interpolation of NA glucose values. The values will not be interpolated between the glucose measurements that are more than inter_gap minutes apart. The default value is 45 min.
tz: A character string specifying the time zone to be used. System-specific (see as.POSIXct), but " " is the current time zone, and "GMT" is UTC (Universal Time, Coordinated). Invalid values are most commonly treated as UTC, on some platforms with a warning.
color_scheme: String corresponding to the chosen color scheme. By default, 'blue-red' scheme is used, with the values below `LLTR` colored in shades of blue, and values above `ULTR` colored in shades of red. The alternative 'red-orange' scheme mimics AGP output from agp with low values colored in red, in-range values colored in green, and high values colored in yellow and orange.
log: Logical value indicating whether log of glucose values should be taken, default values is FALSE. When log = TRUE the glucose values, limits, midpoint, LLTR, and ULTR will all be log transformed.
static_or_gui: One of "ggplot" or "plotly". Default: "plotly". Returns either a ggplot (static image) or Plotly chart (interactive GUI).

Value

A ggplot object corresponding to lasagna plot

References

Swihart et al. (2010) Lasagna Plots: A Saucy Alternative to Spaghetti Plots, Epidemiology 21(5), 621-625, doi:10.1097/EDE.0b013e3181e5b06a

Examples


plot_lasagna_1subject(example_data_1_subject)
#> Warning: Removed 14 rows containing missing values or values outside the scale range
#> (`geom_tile()`).

plot_lasagna_1subject(example_data_1_subject, color_scheme = 'red-orange')
#> Warning: Removed 14 rows containing missing values or values outside the scale range
#> (`geom_tile()`).

plot_lasagna_1subject(example_data_1_subject, lasagnatype = 'timesorted')
#> Warning: Removed 14 rows containing missing values or values outside the scale range
#> (`geom_tile()`).

plot_lasagna_1subject(example_data_1_subject, lasagnatype = 'daysorted')
#> Warning: Removed 14 rows containing missing values or values outside the scale range
#> (`geom_tile()`).

plot_lasagna_1subject(example_data_1_subject, log = TRUE)
#> Warning: Removed 14 rows containing missing values or values outside the scale range
#> (`geom_tile()`).