maxi: Maximum MS Intensity Value

In rformassspectrometry/MsCoreUtils: Core Utils for Mass Spectrometry Data

Maximum MS Intensity Value

Description

maxi determines the maximum or mass spectrometry intensity values, e.g. from a spectrum or chromatogram. In contrast to the base R max() function this function returns NA_real_ if all intensity values are NA or if length(x) is 0 (the base R max function returns -Inf in these cases).

Usage

maxi(x)

Arguments

x	numeric with intensity values from which the maximum should be reported. Will be coerced to numeric.

Value

numeric(1) representing the maximum of values in x. Returns always a numeric (double) even if x is an integer.

Author(s)

Johannes Rainer, Sebastian Gibb

See Also

sumi()

Examples

x <- c(3.2, 34.4, 1.3, NA)
maxi(x)

## Compared to base R max:
max(x)
max(x, na.rm = TRUE)

max(numeric(), na.rm = TRUE)
maxi(numeric())

max(c(NA, NA), na.rm = TRUE)
maxi(c(NA, NA))

rformassspectrometry/MsCoreUtils documentation built on Oct. 24, 2024, 1:52 p.m.