On Jan 25, 2011, at 9:58 PM, eric wrote:
I want to use diff to take the differences in a column "Close" of a
data
frame "y". But I'd like to do it using the transform function so a
new data
frame is created with a difference column. The problem is that diff
gives
one less than the numbe
I want to use diff to take the differences in a column "Close" of a data
frame "y". But I'd like to do it using the transform function so a new data
frame is created with a difference column. The problem is that diff gives
one less than the number of elements in the original data frame. So
transfo
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