| Some summary statistics of a vector for each level of a grouping variable {Rfast} | R Documentation |
Some summary statistics of a vector for each level of a grouping variable.
Description
Some summary statistics of a vector for each level of a grouping variable.
Usage
group(x,ina,method="sum",ina.min=NULL,ina.max = NULL,
ina.length.unique=NULL,mad.method="median")
group.sum(x, ina,ina.max = NULL,ina.min = NULL)
Arguments
x |
A numerical vector with data. |
ina |
A numerical vector with numbers. Note that zero and negative values are not allowed as this can cause R to run forever or crash. |
ina.length.unique |
Length of the unique numerical values of ina argument. |
method |
A character vector with values "sum", "var", "all", "any", "mad", "mean", "med", "min", "max", "min.max". |
ina.max |
Maximum number for vector ina. |
ina.min |
Minimum number for vector ina. |
mad.method |
A character vector with values "median", for median absolute deviation or "mean", for mean absolute deviation. This works only with method="mad". |
Details
This command works only for vectors. Median absolute deviation, mean, median, minimum, maximum are some of the options offered.
Value
A vector with the variance, or standard deviation, or mean, or minimum, or maximum, or median, or minimum-maximum of x for each distinct value of ina.
Author(s)
Manos Papadakis and Michail Tsagris
R implementation and documentation: Manos Papadakis <papadakm95@gmail.com> and Michail Tsagris <mtsagris@uoc.gr>.
See Also
Examples
x <- rgamma(100,1, 4)
ina <- sample(1:5, 100, TRUE)
res<-group(x, ina,method="var")