b01-2-stat-utility: OOMPA Statistical Utility Functions

In PreProcess: Basic Functions for Pre-Processing Microarrays

Description

Utility functions for statistical computations.

Usage

f.above.thresh(a, t)
f.cord(x, y, inf.rm)
f.oneway.rankings(r, s)

Arguments

a	a vector
t	a real number
x	a vector
y	a vector
inf.rm	a logical value
r	vector
s	vector

Value

f.above.thresh returns the fraction of elements in the vector a that are greater than the threshold t.

f.cord returns the concordance coefficient between the two input vectors x and y. If inf.rm is true, then infinite values are removed before computing the concordance; missing values are always removed.

f.oneway.rankings is implemented as order(s)[r] and I cannot recall why we defined it or where we used it.

Author(s)

Kevin R. Coombes [e-mail]

Examples

x <- rnorm(1000, 1, 2)
y <- rnorm(1000, 1, 2)
f.above.thresh(x, 0)
f.above.thresh(y, 0)
f.cord(x, y)

Example output

Loading required package: oompaBase
[1] 0.703
[1] 0.718
[1] -0.01241154

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