plotFancy function

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.

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

Arguments

• 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.

Returns

col, lty, and lwd information

Author(s)

Paul E. Johnson pauljohn@ku.edu