How many populations can I compare at one time?

[kzd0007]

I'm getting error code: Error in eigen(sigma/c.scale) : infinite or missing values in 'x'

when I try to do SEA for more than 4 groups in a single community. Is 4 the limit?

[AndrewLJackson]

Hi No there should not be a limit. Do all of your groups have at lease 3 distinct data points? Which would be the absolute minimum to calculate the ellipse statistics? Best wishes Andrew –––––––––––– Dr Andrew Jackson, PhD, FTCD Professor in Zoology School of Natural Sciences, Department of Zoology Trinity College Dublin, the University of Dublin Dublin 2, Ireland. ***@***.*** http://www.tcd.ie/Zoology/research/<http://www.tcd.ie/Zoology/research/groups/jackson/>groups/jackson/

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________________________________ From: kzd0007 ***@***.***> Sent: Monday, March 4, 2024 6:17:34 PM To: AndrewLJackson/SIBER ***@***.***> Cc: Subscribed ***@***.***> Subject: [AndrewLJackson/SIBER] How many populations can I compare at one time? (Issue #102) I'm getting error code: Error in eigen(sigma/c.scale) : infinite or missing values in 'x' when I try to do SEA for more than 4 groups in a single community. Is 4 the limit? — Reply to this email directly, view it on GitHub<#102>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AAZLLMHITZYF6SHANDOOPQDYWS3D5AVCNFSM6AAAAABEFV6V4OVHI2DSMVQWIX3LMV43ASLTON2WKOZSGE3DONBVGM4DQMI>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[kzd0007]

Wow that's embarrassing--yep that was it! Sometimes even with less than 3 you can force it to do the ellipse (don't worry I haven't tried to publish anything with data like that--I've just done it while playing with preliminary results for things) but this data set had multiple groups with less than 3 and it did not like that.

Thank you so much!!