david@ukma.UUCP (David Herron, NPR Lover) (03/12/85)
# avg.awk - Average the columns of a table of numbers. # The table may have varying numbers of fields, any number of fields, # or any number of records. Missing fields are assumed to be 0. # # Usage: # awk -f avg.awk <table >out # # It prints a single line having one number per field, which is the # average for that field over the whole table. # # Author: # David Herron (ukma!david) # University of Kentucky # BEGIN { maxnf = 0; } { for (i=1; i<=NF; i++) { tab[i] = tab[i] + $(i); } if (NF > maxnf) maxnf = NF; } END { for (i=1; i<=maxnf; i++) printf " %d ",(tab[i]/NR); printf "\n"; }