ConditionalSmoothedScatterPlot: Plot a scatter plot with smoothing line.

Description

Plot a scatter plot with a smoothing line; the smoothing window is aligned either left, center or right.

Usage

ConditionalSmoothedScatterPlot(
  frame,
  xvar,
  yvar,
  groupvar = NULL,
  title = "ConditionalSmoothedScatterPlot",
  ...,
  k = 3,
  align = "center",
  point_color = "black",
  point_alpha = 0.2,
  smooth_color = "black",
  palette = "Dark2"
)

Arguments

frame: data frame to get values from
xvar: name of the independent column in frame. Assumed to be regularly spaced
yvar: name of the dependent (output or result to be modeled) column in frame
groupvar: name of the grouping column in frame. Can be NULL for an unconditional plot
title: title for plot
...: no unnamed argument, added to force named binding of later arguments.
k: width of smoothing window. Must be odd for a center-aligned plot. Defaults to 3
align: smoothing window alignment: 'center', 'left', or 'right'. Defaults to 'center'
point_color: color of points, when groupvar is NULL. Set to NULL to turn off points.
point_alpha: alpha/opaqueness of points.
smooth_color: color of smoothing line, when groupvar is NULL
palette: name of Brewer palette, when groupvar is non-NULL (can be NULL)

Details

xvar is the continuous independent variable and yvar is the dependent binary variable. Smoothing is by a square window of width k.

If palette is NULL, and groupvar is non-NULL, plot colors will be chosen from the default ggplot2 palette. Setting palette to NULL allows the user to choose a non-Brewer palette, for example with scale_fill_manual.

Examples

Run this code


if (requireNamespace('data.table', quietly = TRUE)) {
	# don't multi-thread during CRAN checks
		data.table::setDTthreads(1)
}

y = c(1,2,3,4,5,10,15,18,20,25)
x = seq_len(length(y))
df = data.frame(x=x, y=y, group=x>5)
WVPlots::ConditionalSmoothedScatterPlot(df, "x", "y", NULL,
   title="left smooth, one group", align="left")
# WVPlots::ConditionalSmoothedScatterPlot(df, "x", "y", "group",
#    title="left smooth, two groups", align="left")

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