Hi,

I am trying to subset a dataset based on a filter defined by a user... 
I prompt the user for input.. resulting in a string logical expression 
("X1 < 3").

I have tried using subset, but it is looking for a logical expression, not 
a character string.
I keep getting the error:  'subset' must evaluate to logical.


Example:
x <- data.frame(matrix(1:15, nrow=5, ncol=3))
filter = "X1 < 3"
subset(x, filter)


Any ideas??



Thanks much,
Tracey

	[[alternative HTML version deleted]]


