Re: [R] popbio and stochastic lambda calculation

2010-02-19 Thread Shawn Morrison
That is a big help Chris - thank you very much for your assistance. I also ran your code (below) for the example in Caswell (2001, ~p300) and got matching results. I'd like to add my vote for including this method in the next version of popbio - I think it would be a very useful addition.

Re: [R] popbio and stochastic lambda calculation

2010-02-18 Thread Chris Stubben
Shawn Morrison-2 wrote: # The paper reports a 95% CI of 0.79 - 1.10 # My reproduced result for the CIs is much larger, especially on the upper end. Why would this be? # The authors report using the 'delta' method (Caswell, 2001) to calculate the CI in which the Shawn, I probably

[R] popbio and stochastic lambda calculation

2010-02-16 Thread Shawn Morrison
Hello R users, I am trying to calculate the stochastic lambda for a published matrix population model using the popbio package. Unfortunately, I have been unable to match the published results. Can anyone tell me whether this is due to slightly different methods being used, or have I gone

[R] popbio and stochastic lambda calculation

2010-02-12 Thread Shawn Morrison
Hello R users, I am trying to calculate the stochastic lambda for a published matrix population model using the popbio package. Unfortunately, I have been unable to match the published results. Can anyone tell me whether this is due to slightly different methods being used, or have I gone