b01-0-graph-utility: OOMPA graphical utility functions

In PreProcess: Basic Functions for Pre-Processing Microarrays

Description

Utility functions for graphics.

Usage

ellipse(a, b, x0=0, y0=0, ...)
f.qq(x, main="", cut=0, ...)
f.qt(x, df, main="", cut=0, ...)

Arguments

a	Half the length of the elliptical axis in the x-direction
b	Half the length of the elliptical axis in the y-direction
x0	X-coordinate of the center of the ellipse
y0	Y-coordinate of the center of the ellipse
main	A text string
cut	A real number
df	An integer; the number of degrees of freedom in the t-test
...	Additional graphical parameters passed on to lower-level functions
x	A numeric vector

Details

The ellipse function draws an ellipse on an existing plots. The ellipses produced by this function are oriented with their major and minor axes parallel to the coordinate axes. The current implementation uses points internally.

The function f.qq is a wrapper that combines qqnorm and qqline into a single function call.

The function f.qt is a wrapper that produces quantile-quantile plots comparing the observed vector x with a T-distribution.

Author(s)

Kevin R. Coombes [e-mail]

See Also

points

Examples

x <- rnorm(1000, 1, 2)
y <- rnorm(1000, 1, 2)
plot(x,y)
ellipse(1, 1, col=6, type='l', lwd=2)
ellipse(3, 2, col=6, type='l', lwd=2)
f.qq(x, main='Demo', col='blue')
f.qq(x, cut=3)
f.qt(x, df=3)
f.qt(x, df=40)

Example output

Loading required package: oompaBase

PreProcess documentation built on May 6, 2019, 5:02 p.m.