OpasnetUtils/CheckInput

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Revision as of 10:22, 18 June 2012 by Teemu R (talk | contribs) (Created page with "{{method|moderator=|stub="yes"}} Category:OpasnetUtils ==Description== Checks if an input variable (with the "Inp" -prefix) of the same name as the given argument (ovariabl...")
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Description

Checks if an input variable (with the "Inp" -prefix) of the same name as the given argument (ovariable) exists. If input exists appends or substitutes it to the output and marks the source as "Input". Returns a data.frame.

Code

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CheckInput <- function(variable, substitute = FALSE, ...) {
	if (nrow(variable@output) == 0) stop(paste(variable@name, "output not evaluated yet!"))
	if (exists(paste("Inp", variable@name, sep = ""))) {
		inputvar <- get(paste("Inp", variable@name, sep = ""))
		if (substitute) {
			colnames(inputvar@output)[colnames(inputvar@output) == "Result"] <- "InpVarRes" # Should probably be changed to something
			colnames(variable@output)[colnames(variable@output) == "Result"] <- "VarRes" # that would never be used in any data.
			finalvar <- merge(variable, inputvar)
			finalvar@output$Result <- ifelse(is.na(finalvar@output$InpVarRes), finalvar@output$VarRes, finalvar@output$InpVarRes)
			finalvar@output$Source <- ifelse(is.na(finalvar@output$InpVarRes), finalvar@output$Source, "Input")
			return(finalvar[!colnames(finalvar) %in% c("InpVarRes", "VarRes")])
		}
		temp <- data.frame() #variable@output[variable@output$Source,]
		for (i in levels(variable@output$Source)) {
			temp <- merge(temp, variable@output[variable@output$Source == i, !colnames(variable@output) %in% "Source"])
			colnames(temp)[colnames(temp) %in% "Result"] <- i
		}
		return(melt(temp, measure.vars = levels(variable@output$Source), variable.name = "Source", value.name = "Result", ...))
	}
	return(variable@output)
}

See also