问题
browser pageviews month totalhits percentage
-------------------------------------------------
ch 227025 Nov 2012 626760 36.22
ie 184232 Nov 2012 626760 29.39
s 81430 Nov 2012 626760 12.99
ff 72140 Nov 2012 626760 11.51
ie 39856 Nov 2012 626760 06.36
o 1010 Nov 2012 626760 00.16
rm 325 Nov 2012 626760 00.05
ot 20742 Nov 2012 626760 03.31
I have the above dataset. I want to calculate the percentage based on total hits. However, I want to calculate total hits based on the sum of pageviews. How can I sum multiple cases?
In excell it would be something like SUM(pageviews).
回答1:
See the AGGREGATE command. Example below:
data list free /browser (A2) pageviews (F6.0) month (A3) year (A4) totalhits (F6.0) percentage (F4.2).
begin data
ch 227025 Nov 2012 626760 36.22
ie 184232 Nov 2012 626760 29.39
s 81430 Nov 2012 626760 12.99
ff 72140 Nov 2012 626760 11.51
ie 39856 Nov 2012 626760 06.36
o 1010 Nov 2012 626760 00.16
rm 325 Nov 2012 626760 00.05
ot 20742 Nov 2012 626760 03.31
end data.
compute const = 1.
AGGREGATE
/OUTFILE=*
MODE=ADDVARIABLES
/BREAK=const
/pageviews_sum = SUM(pageviews).
list vars = pageviews totalhits pageviews_sum.
Which returns in the output:
pageviews totalhits pageviews_sum
227025 626760 626760.0
184232 626760 626760.0
81430 626760 626760.0
72140 626760 626760.0
39856 626760 626760.0
1010 626760 626760.0
325 626760 626760.0
20742 626760 626760.0
来源：https://stackoverflow.com/questions/15345941/compute-sum-of-all-cases