findVarsInExpression

findVarsInExpression

parses expressions and returns the variables

Keywords
utilities
Usage
findVarsInExpression(EXPR)
Arguments
EXPR
a call object representing an R expression
Details

findVarsInExpression takes a call and returns the names. It is used in gmReadInternal for parsing an R expression of an SQL query for variables.

Value

A string consisting of the variables.

See Also

replaceVarsInExpression, gmReadInternal

Aliases
  • findVarsInExpression
Examples
a <- quote( A==B^C+A^2+C )
findVarsInExpression(a)
Documentation reproduced from package gmDatabase, version 0.5.0, License: GPL (>= 2) | LGPL (>= 2)

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