Dear All, I found this question here. The question is that how we count the number of columns in the data set. For example,
Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input str3 X float Y str5 Z str3(P Q)
"一" 1 "one"   "Ⅰ" "①"
"二" 2 "two"   "Ⅱ" "②"
"三" 3 "three" "Ⅲ" "③"
"四" 4 "four"  "Ⅳ" "④"
"五" 5 "five"  "Ⅴ" "⑤"
"六" 6 "six"   "Ⅵ" "⑥"
end
there are 5 columns. Any suggestions are appreciated.