Thanks for writing up the long script and giving a new idea. I kind of understand now that you are using date-time as key and checking min & max and only then feeding in to the hash.

If I choose this route, I have to work on other columns(5 & 6) to calculate weighted mean, get first & last value of the each second. Along with that count the max occurrences of column 6. I was able to deduce all above operations using arrays and that is the reason why I was reluctant to change the scheme.

Btw, this is not a college assignment, I am working on some finance data to plot graphs.

Anyone else have other ideas?

In reply to Re^4: Parse CSV lines and process for each second by capriguy84
in thread Parse CSV lines and process for each second by capriguy84

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