getNumericValue: Get a numeric value

In RXMCDA: Functions to Parse and Create XMCDA Files

Description

Extracts a numeric value (integer, real or rational) from an XML tree written according to the XMCDA standard and returns it as a real number.

Usage

getNumericValue(tree)

Arguments

tree	Object containing the XMCDA XML tree (in practice, only the part containing the <value> to be read).

Value

The function returns a float based on the numeric value read.

Examples

tree = newXMLDoc()

newXMLNode("xmcda:XMCDA", 
           namespace = c("xsi" = "http://www.w3.org/2001/XMLSchema-instance", 
           "xmcda" = "http://www.decision-deck.org/2009/XMCDA-2.0.0"), 
           parent=tree)

root<-getNodeSet(tree, "/xmcda:XMCDA")

val<-newXMLNode("value", parent=root[[1]], namespace=c())

newXMLNode("real",3.14,parent=val, namespace=c())

y<-getNodeSet(tree,"//value")

x<-getNumericValue(y)

RXMCDA documentation built on May 1, 2019, 10:23 p.m.