On 4/25/09, Ryan Banerjee-R <banerje...@econ.umd.edu> wrote:
>
> Hi
>
> I am trying to use the "plm" panel data package in R through Rpy.
> ...
> stuff = rpy.r.plm(("ys ~ x1s"), data=testdata_1, model="within")
>
> rpy.set_default_mode(rpy.BASIC_CONVERSION)
>
> results = rpy.r.summary(stuff)['CoefTable']
>
> The program stumbles at:
> File "py_rTest.py",
> stuff = rpy.r.plm(("ys ~ x1s + x2s"), data=testdata_1, model="within")
> rpy.RPy_RException: Error: inherits(object, "formula") is not TRUE
>
> I any ideas how to get this working?
I suspect the problem is how you are trying to supply the formula (you
just used a string, "ys ~ x1s"). Read this:
http://www.warwick.ac.uk/go/peter_cock/python/lin_reg/#lm which should
help.
Peter
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