Panel plot of histogram and density curve

Prints the histogram and corresponding density curve

panel.hist(x, col.bar = "gray", ...)

Arguments

x	a numeric vector of x values
col.bar	the color of the bars
...	options passed to hist

Details

This function prints a combined histogram and density curve for use with the pairs function

References

Ekstrom, CT (2011) The R Primer.

Examples

pairs(~ Ozone + Temp + Wind + Solar.R, data=airquality,
      lower.panel=panel.smooth, diag.panel=panel.hist,
      upper.panel=panel.r2)