Querying the vector lenght of a name entry

 

len	Get the number of data items in a name entry
-n <name>	any name
-fout <trgfld>	field to be created
[-dout <trgdata>]	target data frame

This command reads the length of data in a name entry and stores it in a specified field, which can be put into a data frame with -dout.

Example: The length of boston.crim can be displayed as follows.

NDA> load boston.dat
NDA> len -n boston.crim -fout blen
NDA> getdata blen
1
506