How do you count ghosts in Japanese?


I have found this example, using the human counter:

> In this movie, the two female ghosts who appear before the main character, a
> man who works as a potter, are both victims of a war-torn society.
> この映画で、主人公の陶工の男の前に姿を現す二人の女の幽霊は、共に戦乱の世の犠牲者。

However, I also see this as one definition for 位 :

> い ( i ) 【位】
>
> counter for ghosts

*Interestingly enough, I found the Japanese term for the Trinity is 三位一体 (さんみいったい)

If this counter is in fact used as a counter for ghosts, would someone be kind
enough to demonstrate its usage?




After some research

<http://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q1355324748>

<http://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q1313841088>

etc...

So far I found, 匹, 人, 体 and 柱. Seems to depend a lot on how people see ghosts.

