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                                                   Inverse Ranking

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ymlee
2017-11-02 09:53:55


How to perform an inverse ranking for less is better purposes, eg: P/E, Price/Book Value.

PE:
Close/GetData("mstar","eps ttm",LastData)

I have 10 yrs MorningStar Fundamental Data, am I using the right way to do it?
Any difference between using LastData and ignore this parameter?


QuantShare
2017-11-03 06:17:31

  0

Best Answer
You simply rank for minus the factor.

Example:
"-close" to perform an inverse ranking of the close price


ymlee
2017-11-03 11:13:02

  0

I put it this way:
-1*( Close/GetData("mstar","eps ttm",LastData))

Is it same as your answer?
And what is the result if i ignoring LastData parameter?


QuantShare
2017-11-04 06:20:21

  0

Yes exact.

If you put "Zero" for example instead of "LastDate" then when "eps ttm" data is not available for a particular date, the function "GetData" will return 0 instead of the last available value.

You should plot that on a chart to see the difference.


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