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kurtosis, skewness, start with ML

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dr. M.S. (Matthijs) Berends
2018-07-08 22:14:55 +02:00
parent c768ba0d9c
commit 14b990d769
18 changed files with 401 additions and 15 deletions
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4
man/freq.Rd
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@ -66,8 +66,8 @@ For numeric values of any class, these additional values will all be calculated
For dates and times of any class, these additional values will be calculated with \code{na.rm = TRUE} and shown into the header:
\itemize{
\item{Oldest, using \code{\link[base]{min}}}
\item{Newest, using \code{\link[base]{max}}, with difference between newest and oldest}
\item{Oldest, using \code{\link{min}}}
\item{Newest, using \code{\link{max}}, with difference between newest and oldest}
\item{Median, using \code{\link[stats]{median}}, with percentage since oldest}
}

28
man/kurtosis.Rd Normal file
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@ -0,0 +1,28 @@
% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/kurtosis.R
\name{kurtosis}
\alias{kurtosis}
\alias{kurtosis.default}
\alias{kurtosis.matrix}
\alias{kurtosis.data.frame}
\title{Kurtosis of the sample}
\usage{
kurtosis(x, na.rm = FALSE)
\method{kurtosis}{default}(x, na.rm = FALSE)
\method{kurtosis}{matrix}(x, na.rm = FALSE)
\method{kurtosis}{data.frame}(x, na.rm = FALSE)
}
\arguments{
\item{x}{a vector of values, a \code{matrix} or a \code{data frame}}
\item{na.rm}{a logical value indicating whether \code{NA} values should be stripped before the computation proceeds.}
}
\description{
Kurtosis is a measure of the "tailedness" of the probability distribution of a real-valued random variable.
}
\seealso{
\code{\link{skewness}}
}

2
man/like.Rd
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@ -29,7 +29,7 @@ x \%like\% pattern
A \code{logical} vector
}
\description{
Convenient wrapper around \code{\link[base]{grepl}} to match a pattern: \code{a \%like\% b}. It always returns a \code{logical} vector and is always case-insensitive. Also, \code{pattern} (\code{b}) can be as long as \code{x} (\code{a}) to compare items of each index in both vectors.
Convenient wrapper around \code{\link[base]{grep}} to match a pattern: \code{a \%like\% b}. It always returns a \code{logical} vector and is always case-insensitive. Also, \code{pattern} (\code{b}) can be as long as \code{x} (\code{a}) to compare items of each index in both vectors.
}
\details{
Using RStudio? This function can also be inserted from the Addins menu and can have its own Keyboard Shortcut like Ctrl+Shift+L or Cmd+Shift+L (see Tools > Modify Keyboard Shortcuts...).

30
man/skewness.Rd Normal file
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@ -0,0 +1,30 @@
% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/skewness.R
\name{skewness}
\alias{skewness}
\alias{skewness.default}
\alias{skewness.matrix}
\alias{skewness.data.frame}
\title{Skewness of the sample}
\usage{
skewness(x, na.rm = FALSE)
\method{skewness}{default}(x, na.rm = FALSE)
\method{skewness}{matrix}(x, na.rm = FALSE)
\method{skewness}{data.frame}(x, na.rm = FALSE)
}
\arguments{
\item{x}{a vector of values, a \code{matrix} or a \code{data frame}}
\item{na.rm}{a logical value indicating whether \code{NA} values should be stripped before the computation proceeds.}
}
\description{
Skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean.
When negative: the left tail is longer; the mass of the distribution is concentrated on the right of the figure. When positive: the right tail is longer; the mass of the distribution is concentrated on the left of the figure.
}
\seealso{
\code{\link{kurtosis}}
}

23
man/trends.Rd Normal file
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@ -0,0 +1,23 @@
% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/trends.R
\name{trends}
\alias{trends}
\title{Detect trends using Machine Learning}
\usage{
trends(data, threshold_unique = 30, na.rm = TRUE, info = TRUE)
}
\arguments{
\item{data}{a \code{data.frame}}
\item{threshold_unique}{do not analyse more unique \code{threshold_unique} items per variable}
\item{na.rm}{a logical value indicating whether \code{NA} values should be stripped before the computation proceeds.}
\item{info}{print relevant combinations to console}
}
\value{
A \code{list} with class \code{"trends"}
}
\description{
Test text
}