confidence (version 1.1-2)

conf_input: Check Confidence data

Description

This function checks data.frames to be used by the confidence package. The format has been specified in Van Loon (2014) and should contain the following columns:

• OBJECTID: water body code, e.g., NL89_os;

• PAR: parameter, e.g., Cadmium;

• DATE: date according to ISO 8601 (YYYY-mm-dd) for point values or year YYYY for annual means;

• VALUE: numerical value.

• TARGET: target value for the European Water Framework Directive;

• UNIT: measurement unit of PAR. This unit should be the same for all records with the same PAR and is the same for both VALUE and TARGET;

• transform: data transformation, i.e., log, logit, NA.

Usage

conf_input(x)

Arguments

x

data.frame to be checked

Value

data.frame that has passed all checks

Details

The function performs the following tasks:

• checks availablitity of required columns (case insensitive);

• make column names case-insensitive;

• removes redundant spaces;

• checks on missing values in required columns;

• checks if DATE-field adheres to ISO 8601 (YYYY-mm-dd) or YYYY;

• checks mixtures of annual averages and point values for a each year;

• checks if measurement units are the same for a specific OBJECTID-PAR-pair;

• checks if TARGET-value is the same for a specific OBJECTID-PAR-pair;

• checks if transform is one of log, logit, NA in transform column;

• checks that the EQR-column contains identical values fo each OBJECTID-PAR combination.