Outliers of data

Robert Fitzpatrick wrote:

I have a project where it is necessary to determine Outliers of lab
results and looking for some pointers on the best way to handle this
type of calculation with PostgreSQL. Possibly an operator? I have no
experience with that. I found some info on the web for calculating
Outliers, here is one of them...

http://cc.uoregon.edu/cnews/spring2000/outliers.html

Hi Robert,

You may want to consider the R language interface (pl/R); R (the
language) has great tools for detecting and operating on outliers.

Don

Don,

If the data is can be mapped as 2D or 3D Cartesian coordinates, you could
use spatial operators from PostGIS.

Rick

Don Isgitt
<djisgitt@soundenergy.c To: Robert Fitzpatrick <robert@webtent.com>
om> cc: PostgreSQL <pgsql-general@postgresql.org>
Sent by: Subject: Re: [real] [GENERAL] Outliers of data
pgsql-general-owner@pos
tgresql.org

10/21/2004 01:55 PM

Robert Fitzpatrick wrote:

I have a project where it is necessary to determine Outliers of lab
results and looking for some pointers on the best way to handle this
type of calculation with PostgreSQL. Possibly an operator? I have no
experience with that. I found some info on the web for calculating
Outliers, here is one of them...

http://cc.uoregon.edu/cnews/spring2000/outliers.html

Hi Robert,

You may want to consider the R language interface (pl/R); R (the
language) has great tools for detecting and operating on outliers.

Don

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