sas - how many values are missing for each observation -

i have data follows:

id  date  shoesize shoetype  1   4/3/12  .  bball  2   .    12 running  3 1/2/12  8 .  4 . 9.5 bball 

i want count number of '.' there in each row , make frequency table information. in advance

you can determine number of missing values in row nmiss , cmiss functions (nmiss numeric, cmiss character). if have list of of variables, should use list; if not, need deal fact number_missing missing (the -1 there).

data want; set have; number_missing=nmiss(of _numeric_) + cmiss(of _character_)-1; run; 

then whatever want new variable.