Thanks for telling me that you could not get my message, I hope this work better...
so my question was: I built a population matrix to which I applied the fonction eigen in order to find the main parameters about my population. I know that the first eigen value correspond to lambda or exponential growth rate of my population. My problem is that I want to have the 95% confidence interval of the specific lambda (1.056 in the case). Is there a way to do that? Are the other eigen value shown in the output could help me doing it. I would very appreciate any help. Thanks for your time $values [1] 1.0561867+0.0000000i 0.0749653+0.5249157i 0.0749653-0.5249157i [4] 0.4498348+0.0795373i 0.4498348-0.0795373i -0.3357868+0.0000000i $vectors [1,] -0.72849129+0i -0.11058308+0.3293511i -0.11058308-0.3293511i 0.00244042+0.03012017i 0.00244042-0.03012017i [2,] -0.41384232+0i 0.35124594+0.1765638i 0.35124594-0.1765638i 0.01004458+0.03839895i 0.01004458-0.03839895i [3,] -0.27427879+0i 0.29630718-0.4260863i 0.29630718+0.4260863i 0.02540181+0.05526223i 0.02540181-0.05526223i [4,] -0.34274458+0i -0.62502691+0.0000000i -0.62502691+0.0000000i 0.55688585-0.17705587i 0.55688585+0.17705587i [5,] -0.31754610+0i 0.19351247+0.1625154i 0.19351247-0.1625154i -0.73460380+0.00000000i -0.73460380+0.00000000i [6,] -0.06705781+0i -0.00340804-0.0295753i -0.00340804+0.0295753i 0.30711075+0.13557984i 0.30711075-0.13557984i ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.