Hi, I'm new to rpy2 and am trying out a few examples. I'm unfortunately getting a bit confused...
I've tried the example anova on the rpy2 document page and it works as expected. Now I'm trying to conduct an anova in a different way (and all I've managed to do is highlight my ignorance). import rpy2.robjects as robjects r = robjects.r may=[2166, 1568, 2233, 1882, 2019] sep=[2279, 2075, 2131, 2009, 1793] dec=[2226, 2154, 2583, 2010, 2190] d = r.stack(r.list(may=may,sep=sep,dec=dec)) robjects.globalEnv["d"] = d # Is this necessary here? oneway = robjects.r['oneway.test'] test = oneway("values ~ ind, data=d, var.equal=TRUE") I get the following error message: Error in function (formula, data, subset, na.action, var.equal = FALSE) : 'formula' missing or incorrect Traceback (most recent call last): File "<stdin>", line 14, in <module> File "/usr/lib/python2.5/site-packages/rpy2/robjects/__init__.py", line 422, in __call__ res = super(RFunction, self).__call__(*new_args, **new_kwargs) rinterface.RRuntimeError: Error in function (formula, data, subset, na.action, var.equal = FALSE) : 'formula' missing or incorrect Any help will be greatly appreciated! -J ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ rpy-list mailing list rpy-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rpy-list