nullPlot: Create a blank plot with optional labels
In jamba: Just Analysis Methods Base

nullPlot

R Documentation

Create a blank plot with optional labels

Description

Create a blank plot with optional labels for margins

Usage

nullPlot(
  xaxt = "n",
  yaxt = "n",
  xlab = "",
  ylab = "",
  col = "transparent",
  xlim = c(1, 2),
  ylim = c(1, 2),
  las = graphics::par("las"),
  doBoxes = TRUE,
  doUsrBox = doBoxes,
  fill = "#FFFF9966",
  doAxes = FALSE,
  doMargins = TRUE,
  marginUnit = c("lines", "inches"),
  plotAreaTitle = "Plot Area",
  plotSrt = 0,
  plotNumPrefix = "",
  bty = "n",
  showMarginsOnly = FALSE,
  add = FALSE,
  ...
)

Arguments

`xaxt`	`character` value compatible with`options("xaxt")`
`yaxt`	`character` value compatible with `options("xaxt")`
`xlab`	`character` x-axis label
`ylab`	`character` y-axis label
`col`	`character` colors passed to `plot()`
`xlim`	`numeric` x-axis range
`ylim`	`numeric` y-axis range
`las`	`integer` value indicating whether axis labels should be parallel (1) or perpendicular (2) to the axis line.
`doBoxes`	`logical` whether to draw annotated boxes around the plot and inner and outer margins.
`doUsrBox`	`logical` whether to draw a colored bow indicating the exact plot space, using the function `usrBox()`.
`fill`	`character` R color used to fill the background of the plot as used by `usrBox()`.
`doAxes`	`logical` whether to draw default x- and y-axes.
`doMargins`	`logical` whether to label margins, only active when doBoxes=TRUE.
`marginUnit`	`character` indicating the units used for margin labels.
`plotAreaTitle`	`character` label printed in the center of the plot area.
`plotSrt`	numeric angle for the plotAreaTitle, which is good for labeling this plot with vertical text when displaying a plot panel inside a grid layout, where the plot is taller than it is wide.
`plotNumPrefix`	`character` or integer label appended as suffix to margin labels, which is useful when annotating multiple plots in a grid layout, where labels are sometimes quite close together. This label is but a simple attempt to sidestep the real problem of fitting labels inside each visual component.
`bty`	`character` passed `plot()`, default `"n"` suppresses the default box, which can then be optionally drawn based upon the `doBoxes` parameter.
`showMarginsOnly`	`logical` whether to create a new plot or to annotate an existing active plot.
`add`	`logical` whether to add to an existing active R plot, or create a new plot window.
`...`	additional arguments are ignored.

Details

This function creates an empty plot space, using the current graphics::par() settings for margins, text size, etc. By default it displays a box around the plot window, and labels the margins and plot area for review. It can be useful as a visual display of various base graphics settings, or to create an empty plot window with pre-defined axis ranges. Lastly, one can use this function to create a "blank" plot which uses a defined background color, which can be a useful precursor to drawing an image density which may not cover the whole plot space.