RSurvey (version 0.7-9)

EvalFunction: Parse and Evaluate an RSurvey Expression

Description

Parses and evaluates a character string representation of an RSurvey expression.

Usage

EvalFunction(txt, cols)

Arguments

txt

character; a string representation of an Rfunction; see Details.

cols

list; see ManageVariables.

Value

• The result of evaluating the text epression.

See Also

parse, eval

Examples

d <- data.frame(cbind(x = 1, y = 1:10))
Data("data.raw", d)
cols <- list()
cols[[1]] <- list(id = "X", index = 1, fun = ""X"")
cols[[2]] <- list(id = "Y", index = 2, fun = ""Y"")
EvalFunction(""Y"", cols)
EvalFunction(""X" + "Y"", cols)
EvalFunction("rnorm(12)", cols)