Anyone did implmement NORMINV of excel in KDB?

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1

I just do a quick search in google, didn’t found anything related, just wonder if anyone did that before?

2

You can check out http://althenia.net/qml and look at nicdf, that can be a good starting point

3

Great, thanks a lot, actually I found another post, it look simple to implement

http://info.michael-simons.eu/2013/02/21/java-implementation-of-excels-statistical-functions-norminv/

4

kx.com has an implementation:

http://kx.com/q/stat.q

or you can find a vectorized implementation introduced in Q Tips (http://q-tips.net):

https://github.com/psaris/qtips/blob/master/stat.q