Regression plots with predicted value lines, confidence intervals, color coded interactions

This is the back-end for the functions plotSlopes and plotCurves. Don't use it directly.

Usage

plotFancy(
  newdf,
  olddf,
  plotx,
  modx,
  modxVals,
  interval,
  plotPoints,
  legendArgs,
  col = NULL,
  llwd = 2,
  opacity,
  ...
)

newdf: The new data frame with predictors and fit, lwr, upr variables
olddf: A data frame with variables(modxVar, plotxVar, depVar)
plotx: Character string for name of variable on horizontal axis
modx: Character string for name of moderator variable.
modxVals: Values of moderator for which lines are desired
interval: TRUE or FALSE: want confidence intervals?
plotPoints: TRUE or FALSE: want to see observed values in plot?
legendArgs: Set as "none" for no legend. Otherwise, a list of arguments for the legend function
col: requested color scheme for lines and points. One per value of modxVals.
llwd: requested line width, will re-cycle.
opacity: Value in 0, 255 for darkness of interval shading
...: Other arguments passed to plot function.

col, lty, and lwd information

Paul E. Johnson pauljohn@ku.edu