Class 'disk'

This transforms a vector to a new class disk, which is a growth zone size (around an antibiotic disk) in millimetres between 6 and 50.

as.disk(x, na.rm = FALSE)

is.disk(x)

Arguments

x	vector
na.rm	a logical indicating whether missing values should be removed

Value

An integer with additional new class disk

Details

Interpret disk values as RSI values with as.rsi(). It supports guidelines from EUCAST and CLSI.

Stable lifecycle

The lifecycle of this function is stable. In a stable function, we are largely happy with the unlying code, and major changes are unlikely. This means that the unlying code will generally evolve by adding new arguments; we will avoid removing arguments or changing the meaning of existing arguments.

If the unlying code needs breaking changes, they will occur gradually. To begin with, the function or argument will be deprecated; it will continue to work but will emit an message informing you of the change. Next, typically after at least one newly released version on CRAN, the message will be transformed to an error.

Read more on our website!

On our website https://msberends.gitlab.io/AMR you can find a comprehensive tutorial about how to conduct AMR analysis, the complete documentation of all functions (which reads a lot easier than here in R) and an example analysis using WHONET data.

See also

as.rsi()

Examples

if (FALSE) {
# transform existing disk zones to the `disk` class
library(dplyr)
df <- data.frame(microorganism = "E. coli",
                 AMP = 20,
                 CIP = 14,
                 GEN = 18,
                 TOB = 16)
df <- df %>% mutate_at(vars(AMP:TOB), as.disk)
df

# interpret disk values, see ?as.rsi
as.rsi(x = as.disk(18),
       mo = "Strep pneu",  # `mo` will be coerced with as.mo()
       ab = "ampicillin",  # and `ab` with as.ab()
       guideline = "EUCAST")

as.rsi(df)
}