plotComparisonDataFrame: Make a plot comparing two data frames

In mizer: Dynamic Multi-Species Size Spectrum Modelling

Make a plot comparing two data frames

Description

Used internally by the comparison plotting functions such as plotSpectra2() and plotCDF2(). The two data frames are combined and drawn with colour identifying the species or group and linetype identifying the object.

Usage

plotComparisonDataFrame(
  frame1,
  frame2,
  params,
  name1 = "First",
  name2 = "Second",
  xlab = waiver(),
  ylab = waiver(),
  xtrans = "identity",
  ytrans = "identity",
  xlim = c(NA, NA),
  ylim = c(NA, NA),
  y_ticks = 6,
  highlight = NULL,
  legend_var = "Legend"
)

Arguments

frame1, frame2	Data frames sharing the same first three variables (x, y and grouping variable). The names of frame1 are imposed on frame2.
params	A MizerParams object, used for the line colours.
name1, name2	Labels for the two data frames, used in the linetype legend.
xlab, ylab	Labels for the x and y axes.
xtrans, ytrans	Transformations for the x and y axes, e.g. "log10" or "identity".
xlim, ylim	Numeric vectors of length two giving the axis limits. Use NA to refer to the existing minimum or maximum.
y_ticks	The approximate number of ticks desired on the y axis.
highlight	Name or vector of names of the species to be highlighted.
legend_var	Name of the variable used in the legend and to determine the line colour.

Details

Both data frames must arrive ready to plot: on the axis they will be drawn against, with any total line already among their rows. Each operand is prepared by whatever produced it, using its own model, because a length axis and a density Jacobian both depend on the weight-length relationship of the model the values came from. Doing it here instead would silently impose the first model's parameters on the second.

Value

A mizer_plot (ggplot2) object.

mizer documentation built on Aug. 24, 2026, 9:08 a.m.