yyHatPlot {expandFunctions} | R Documentation |
Plots y and yHat on the same scale as a scatterplot with a 1:1 reference line in red. This is useful for visually comparing actual data y with estimates yHat, determining outliers, etc.
yyHatPlot(y, yHat, ...)
y |
Vector or matrix coercible to vector. Typically will be the quantity to be predicted. |
yHat |
Vector or matrix coercible to vector, same length as y. Typically will be the prediction. |
... |
Optional additional graph parameters. |
Normally only makes sense with vectors, column matrices, or row matrices.
Returns invisibly - only used for graphic side effects.
set.seed(1) nObs <- 80 X <- distMat(nObs,2) A <- cbind(c(1,-1)) Y <- X %*% A + rnorm(nObs) # Response data lmObj <- lm(Y ~ X) Yhat <- predict(lmObj) # Estimated response yyHatPlot(Y,Yhat)