Checking for repeating ID?

dragoljub

Hi Guys,

Sometimes I create an ID attribute from part numbers x,y locations etc and if there is ever a repeating sample in my large data set it would be nice to see. I am surprised that RM lets the ID attribute contain repeating values.

What is the quickest way to check if there are any repeating values (not necessarily nominal) for a particular attribute?

It would be cool if there was a meta data column for that.

-Gagi

land

Hi Gagi,
in fact there is a meta data value for this: Take a look at the mode, this is the most frequent nominal value. If this value occurs just once, then each value is unique.

Greetings,
  Sebastian

dragoljub

I guess my problem is my ID is an integer but stored as a real.

Will mode only be computed for nominal attributes?

Thanks,
-Gagi

land

Hi Gagi,
that's true: Mode is only calculated for nominal data. You could use Numerical to Polynomial to convert it.

Greetings,
  Sebastian

dragoljub

Ahh now that makes sense. Thanks!

-Gagi  ;D