[R] Summarizing data based on Date

[Shivi82]

Hi Petr,
Thanks for the explanation below. 
I tried the code you supplied however it seems as my date is a factor hence
it is not working.
The error I got from the code was :

Error: unexpected symbol in:
"final<-aggregate(test$CHG_WT,list(format(test$CR_DT,"%d"),sum)
final"

str(test$CR_DT)- gives Factor with 31 levels 



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