Formula Interpreter in R
On Fri, Jun 3, 2011 at 11:48 AM, amit jain <buddyhi at indiatimes.com> wrote:
Hi All, Before writing a simple formula intereter in R myself, i wanted to find out if any one has done it before. I could not locate it myself. I am looking for something like this - take a dataframe and a simple formula string as input and gives an output with formula applied on different columns of dataframe ( even better if it is time series compatibe) A crude and bad example is as below http://www.codeproject.com/KB/recipes/formulainterpreter.aspx I will appreciate if anyone can provide any pointers/direction
Try this: fo <- "x+y/2" eval(parse(text = fo), list(x = 1, y = 2))
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