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2012 Jun 22
3
removing NA from a data frame
...39;t seem to be working for me.
Dataset:
> str ( ex10s )
'data.frame': 2189576 obs. of 5 variables:
$ LOPNR : int 58 58 58 58 64 64 64 64 64 64 ...
$ DIAGNOS: Factor w/ 173 levels "F20","F200","F2000",..: 128 128 128 128 105 105 105 160 105 105 ...
$ X_DATE : int 20060821 20061207 20080102 20090904 20010327 20010925 20020307 20021007 20021007 20030320 ...
$ SOURCE : int 2 2 2 2 2 2 2 2 2 1 ...
$ dg : Factor w/ 7 levels "0","1","2","3",..: 6 6 6 6 5 5 5 6 5 5 ...
The only NAs are in the factor dg (put in b...