*From*: "Alastair M. Robinson" <profiling@xxxxxxxxxxxxxxxxxxxxxxx>*To*: argyllcms@xxxxxxxxxxxxx*Date*: Sat, 29 Aug 2009 12:25:08 +0100

Hi :) Craig Ringer wrote:

Here's an example error spike: 5: 83.070051 1.346918 2.895409 <=> 82.505987 1.360226 2.779120 de 0.576080 6: 82.110832 1.536077 2.992189 <=> 81.607727 1.437567 2.733480 de 0.574238 7: 40.886825 4.316704 18.048722 <=> 82.063784 1.539669 2.906388 de 43.960711 **** Huge error spike ****

I know I can average .ti3 sample sets using bin/average. However, it only seems to accept a pair of .ti3 inputs at a time, and averaging consecutively isn't going to produce an ideal result.

Also, is there any good built-in way to eliminate outliers in the .ti3 files, or will I need to roll my own ? For that matter, is it wise to do outlier elimination at all?

If there's no existing method I'm missing, and if what I want to do actually seems like a good idea to the folks here, I'm thinking of seeing if I can extend `average.c' to handle more than two input files.

I'd try to add basic outlier elimination for when it has three or more inputs, with the outlier elimination threshold shrinking as the number of input files grows. At this point I'm thinking that any sample more than three (maybe even two) standard deviations from the mean is probably a reasonable candidate for outlier elimination.

Hope this gives you food for thought! All the best, -- Alastair M. Robinson

**Follow-Ups**:**[argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets?***From:*Klaus Karcher

**[argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets?***From:*Craig Ringer

**[argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets?***From:*Craig Ringer

**References**:

- » [argyllcms] bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Craig Ringer
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Klaus Karcher
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Alastair M. Robinson
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Klaus Karcher
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Alastair M. Robinson
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Klaus Karcher
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Craig Ringer
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Craig Ringer
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Alastair M. Robinson
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Craig Ringer
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Graeme Gill
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Graeme Gill
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - edmund ronald
- » [argyllcms] Re: bin/average: averaging and possible outlier elimination for three or more .ti3 sets? - Graeme Gill