Useful panel function with qqmath
Useful panel function with qqmath. Draws a line passing through the points (usually) determined by the .25 and .75 quantiles of the sample and the theoretical distribution.
panel.qqmathline(x, y = x, distribution = qnorm, probs = c(0.25, 0.75), qtype = 7, groups = NULL, …, identifier = "qqmathline")
The original sample, possibly reduced to a fewer number of quantiles, as determined by the
an alias for
xfor backwards compatibility
quantile function for reference theoretical distribution.
numeric vector of length two, representing probabilities. Corresponding quantile pairs define the line drawn.
typeof quantile computation used in
optional grouping variable. If non-null, a line will be drawn for each group.
A character string that is prepended to the names of grobs that are created by this panel function.