Robust Design-Combing sites with different secondary periods

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Robust Design-Combing sites with different secondary periods

Postby cb » Sat Feb 23, 2019 8:55 pm

I am using RMark to do a robust design analysis on a long time series (10 years) in 3 sites with very small populations. I would like to combine all the data in one analysis with site as a group. The problem is that the number of secondary series varies per site per year (the species' ecology drives this). Is there a way to deal with this in RMark?

For example, in separate by site runs, the time.interval parameters might be:

site 1:
Code: Select all
time.interval = c(0,1,0,0,1,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,1,0,0,0,0,1,0,1,0,0,0,0)


site 2:
Code: Select all
time.interval = c(0,0,1,0,0,0,0,1,0,1,0,1,0,0,0,1,0,0,0,0,0,1,0,0,0,0,1,0,1,0,0,0,0,1,0,0,0)


site 3:
Code: Select all
time.interval = c(0,0,0,1,0,0,0,0,1,0,1,0,0,0,0,1,0,1,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0)


I don't know if this makes any sense, but I did a trial filling out the capture history for 1 site with . (missing) to have standard secondary intervals. I got similar but not exactly the same results.

Any suggestions? All help would be much appreciated!
cb
 
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Re: Robust Design-Combing sites with different secondary per

Postby jlaake » Sun Feb 24, 2019 12:20 pm

Did you fix p to 0 for the padded occasions specific to the groups using fix in the design data?
jlaake
 
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Re: Robust Design-Combing sites with different secondary per

Postby cb » Sun Feb 24, 2019 1:11 pm

Thanks for the help.
No I didn't think of that and will try it.
So this approach should work if I get the model structure right?

Also, I just posted a question on how to fix parameters for another purpose.
I am a novice in Rmark, but will get there....
Thanks much!
cb
 
Posts: 13
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Re: Robust Design-Combing sites with different secondary per

Postby jlaake » Sun Feb 24, 2019 8:43 pm

Yes it should.
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Re: Robust Design-Combing sites with different secondary per

Postby cb » Thu Feb 28, 2019 8:43 pm

Fixing p's worked. I got the exact same results as the 'non-padded' version.
Thanks much!
cb
 
Posts: 13
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