set_na: set_na

In knausb/PlantMorph: An R Package For Morphometric Analysis Of Plant Taxa

Description

Sets a range of values to NA

Usage

set_na(x, na.vector = c("\\?", "-999"))

Arguments

x	a vector of values within which some values should be set to NA
na.vector	a vector of values that should be changed to NA

Details

Creates a regex from na.vector and uses this to set values as NA. Values in na.vector are 'wrapped' with '^' and '$' to add specificity. Some characters need to be escaped to form regexs. See regex for details.

Examples

myData <- data.frame(matrix(ncol=4, nrow=12))
colnames(myData) <- paste('char', 1:ncol(myData), sep="_")
rownames(myData) <- paste('sample', 1:nrow(myData), sep="_")
set.seed(9)
myData[,1] <- abs(round(rnorm(nrow(myData), mean = 5, sd =2)))
myData[,2] <- letters[myData[,1]]
myData[,3] <- as.factor(myData[,2])
myData[,4] <- factor(myData[,2], ordered = TRUE)
myData[3,2] <- "?" # Add an nexpected value
myData[4,2] <- "-999" # Add an nexpected value
myData[,2] <- set_na(myData[,2])
myData

knausb/PlantMorph documentation built on May 20, 2019, 12:52 p.m.