ksTest: Kolmogorov-Smirnov Tests.

Description

Performs a one- or two-sample Kolmogorov-Smirnov test. Includes the option to perform the two-sample test using the formula notation.

Usage

ksTest(x, ...)

## S3 method for class 'default':
ksTest(x, y, ..., alternative = c("two.sided", "less",
  "greater"), exact = NULL)

## S3 method for class 'formula':
ksTest(x, data = NULL, ..., alternative = c("two.sided",
  "less", "greater"), exact = NULL)

Arguments

A numeric vector of data values or a formula (see details).

A numeric vector of data values, a character string naming a cumulative distribution function, or an actual cumulative distribution function. See ks.test.

alternative

A string that indicates the alternative hypothesis. See ks.test.

exact

NULL or a logical that indicates whether an exact p-value should be computed. See ks.test. Not available if ties are present, nor for the one-sided two-sample case.

data

A data frame that contains the variables in the formula for x.

...

Parameters of the distribution specified (as a character string) by y.

Value

See ks.test.

Details

This is exactly ks.test except that a formula may be used for the two-sample situation. The default version is simply a pass through to ks.test. See ks.test for more details.

Examples

Run this code

## see ks.test for other examples
x <- rnorm(50)
y <- runif(30)
df <- data.frame(dat=c(x,y),grp=rep(c("X","Y"),c(50,30)))

## one-sample (from ks.test) still works
ksTest(x+2, "pgamma", 3, 2)
ks.test(x+2, "pgamma", 3, 2)

## first two-sample example in ?ks.test
ksTest(x,y)
ks.test(x,y)

## same as above but using data.frame and formula
ksTest(dat~grp,data=df)

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