calculateEle63: Calculate Element 63

In SWS-Methodology/faoswsAupus: Package to perform the AUPUS calculation.

Description

This function calculates element 63 (Inflow Unit Value) using element 61 (Inflow) and element 62 (Inflow Value). The calculation is simple: unit value (63) should be the total value (62) divided by the total quantity (61). However, a multiplicative constant of 1000 is also used, so the formula is 63 = 62 * 1000 / 61.

Usage

calculateEle63(data, aupusParam)

Arguments

data	The AUPUS node dataset, typically as produced by buildNodes.
aupusParam	A list of running parameters to be used in pulling the data. Typically, this is generated from getAupusParameter (see that function for a description of the required elements).

Details

Note that if 61 or 62 are not available, and if 63 is replaceable, then it is replaced with a missing value (0M).

Value

This function returns a list (of length 2) of integer vectors containing the row numbers of observations which were updated (the first vector when a value was computed, the second for when 62 or 61 was missing). However, it also has a side effect: rows within the passed data.table ("data") have element 63's value and symbol updated.

SWS-Methodology/faoswsAupus documentation built on May 9, 2019, 11:45 a.m.