Hello,
I would like to create lagged and delta variables from a set of variables
and then add them to a dataframe
Suppose that GDPPcSa is a variable. I would like to be able to do this
QuarterlyData$D1GdpPcSa = diff(GDPPcSa , 1)
in an automated fashion so that I loop over Quartely data to compute the
first difference of its variables and add them to the dataframe.
.It would be great to get a way to create the string "D1GdpPcSa" knowing
that the name of the var is GdpPcSa. Then I can add the varibale D1GdpPcSa
to the dataframe and work on its names attribute.
Thanks
Paolo
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