% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/operationareamat.R
\name{sdareamat}
\alias{sdareamat}
\title{Function for getting the standard deviation value of an area on a matrix.}
\usage{
sdareamat(m, rowmin=1, rowmax, colmin=1, colmax)
}
\arguments{
\item{m}{A matrix object}
\item{rowmin}{The first row for subsetting. Default value is 1.}
\item{rowmax}{The last row for subsetting.}
\item{colmin}{The first column for subsetting. Default value is 1.}
\item{colmax}{The last column for subsetting.}
}
\value{
The standard deviation value of the subsetted area of matrix m
}
\description{
A function for calculating the standard deviation value of an area of a matrix.
For example if we want to get the standard deviation value of part of a 10x10 matrix, starting from
2nd column, 1st row to 3rd row, 5th column, we'll get the values of this smaller matrix
(3x4 to be precise) and then we'll calculate the standard deviation of all of them.
}
\examples{
m <- matrix(rnorm(100, mean = 0, sd = 1), nrow = 10, ncol = 10)
sdarea <- sdareamat(m, rowmin = 1, rowmax = 3, colmin = 2, colmax = 5)
}