QQplot | R Documentation |
QQplot is a generic function that produces QQ plot of two datasets, distribution and dataset or two distributions.
QQplot( d1, d2, line = TRUE, col = "#122e94", line_col = "#f28df9", xlab = deparse(substitute(d1)), ylab, main = "Q-Q plot", lwd = 2, ... ) ## Default S3 method: QQplot( d1, d2, line = TRUE, col = "#122e94", line_col = "#f28df9", xlab = deparse(substitute(d1)), ylab = deparse(substitute(d2)), main = "Q-Q plot", lwd = 2, ... ) ## S3 method for class 'dist' QQplot( d1, d2, line = TRUE, col = "#122e94", line_col = "#f28df9", xlab = deparse(substitute(d1)), ylab = ylabe, main = "Q-Q plot", lwd = 2, CI = re, conf = 0.95, n = 100, CI_col = "grey80", ... ) QQnorm(d2, xlab = "Standard Normal", ylab = deparse(substitute(d2)), ...)
d1 |
distribution object or dataset. |
d2 |
distribution object or dataset. |
line |
if qqline should be included, default: TRUE. |
col |
color of points, default: '#122e94'. |
line_col |
color of qqline, default: '#f28df9'. |
xlab |
xlab, default: deparse(substitute(d1)). |
ylab |
ylab, default: deparse(substitute(d2)). |
main |
title, default: 'Q-Q plot'. |
lwd |
lwd of qqline, default: 2. |
... |
further arguments to be passed. |
CI |
if confidence bound should be included. |
conf |
confidence level for confidence bound, default: 0.95. |
n |
number of points at which quantile functions are evaluated if two distributions are compared, default: 100. |
CI_col |
color of confidence bound, default: 'grey80'. |
QQplot
is able to compare any combination of dataset and distributions.
QQnorm
is a wrapper around QQplot
, where d1 is set to normdist()
.
If quantiles of a continuous distribution are compared with a sample, a confidence bound for data is offered. This confidence "envelope" is based on the asymptotic results of the order statistics. For more details see https://en.wikipedia.org/wiki/Order_statistic.
# sample vs sample QQplot(r(normdist(), 10000), r(tdist(df = 4), 10000)) # distribution vs sample QQplot(normdist(), r(tdist(df = 4), 10000)) # distribution vs distribution QQplot(normdist(), tdist(df = 4))
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