This is happening because the signature of the R function is: base::mean(x, ...)
No na.rm in sight, therefore no na_rm by default on the Python side - see http://rpy.sourceforge.net/rpy2/doc-dev/html/robjects_functions.html r['mean_default'](data_NA, na_rm=True) or r.mean(data_NA, **{'na.rm': True}) should work. L. On 2011-10-05 14:26, William T. Martin wrote: > How do I specify na.rm=True to ignore NA vector values? > > The following code: > > import rpy2.robjects as ro > import rpy2.rinterface as ri > > r=ro.r > data=ro.FloatVector([10, 20, 30]) > print(data) > m=r.mean(data, na_rm=ri.TRUE) > print(m) > > data_NA=ro.FloatVector([10, 20, 30, ro.NA_Real]) > print(data_NA) > m_NA=r.mean(data_NA, na_rm=ri.TRUE) > print(m_NA) > > produces: > > >>> import rpy2.robjects as ro > >>> import rpy2.rinterface as ri > >>> > > >>> data_NA=ro.FloatVector([10, 20, 30, ro.NA_Real]) > >>> print(data_NA) > [1] 10 20 30 NA > > >>> m_NA=r.mean(data_NA, na_rm=ri.TRUE) > >>> print(m_NA) > [1] NA > > > A simple R program gives the following: > > > data_NA<-c(10, 20, 30, NA) > > mean(data_NA) > [1] NA > > mean(data_NA, na.rm=TRUE) > [1] 20 > > Thank you > > > > > > > ------------------------------------------------------------------------------ > All the data continuously generated in your IT infrastructure contains a > definitive record of customers, application performance, security > threats, fraudulent activity and more. Splunk takes this data and makes > sense of it. Business sense. IT sense. Common sense. > http://p.sf.net/sfu/splunk-d2dcopy1 > _______________________________________________ > rpy-list mailing list > rpy-list@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/rpy-list ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2dcopy2 _______________________________________________ rpy-list mailing list rpy-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rpy-list
