flag_thr: Flag Based on Static Threshold Values

In grahamstewart12/tidyflux:

Description

Values of x are checked against two specified thresholds to obtain their quality control (qc) flags.

Usage

flag_thr(x, thr, flag = c("higher", "outside", "between", "lower"))

Arguments

x	A numeric atomic type with NULL dimensions.
thr	A numeric vector with 2 non-missing values.
flag	A character string. Selects one of the available flagging approaches. Can be abbreviated. See 'Details'.

Details

This function is called by extract_qc but can be useful on its own when filtering values of variable according to the 0 - 2 qc flag scheme.

Obtained qc flags are assigned in the range 0 - 2 according to these rules:

For flag = "higher"

• If x <= thr[1], QC flag = 0.

• If x > thr[1] & x <= thr[2], QC flag = 1.

• If x > thr[2], QC flag = 2.

For flag = "outside"

• If x >= thr[1] & x <= thr[2], QC flag = 0.

• If x < thr[1] | x > thr[2], QC flag = 2.

For flag = "between"

• If x <= thr[1] | x >= thr[2], QC flag = 0.

• If x > thr[1] & x < thr[2], QC flag = 2.

For flag = "lower"

• If x >= thr[1], QC flag = 0.

• If x < thr[1] & x >= thr[2], QC flag = 1.

• If x < thr[2], QC flag = 2.

This is a modified version of the function of the same name in the R package "openeddy".

Value

An integer vector with the same length as x. Its varnames and units attributes are set to name_out and "-" values, respectively.

grahamstewart12/tidyflux documentation built on June 4, 2019, 7:44 a.m.