Plot abunance estimate

[Joaquín Aldabe]

Hi all, is there a way of plotting abundance and CI estimated by a distance sampling model?

Thanks a lot.

Cheers,

Joaquin

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Joaquín Aldabe

Departamento de Sistemas Agrarios y Paisajes Culturales
Centro Universitario de la Región Este, Universidad de la República, Uruguay

Ruta 15 (y Ruta 9), Km 28.500, Departamento de Rocha  

                                                           

https://sites.google.com/view/joaquin-aldabe

[Eric Rexstad]

Joaquín:

There is not a function in the Distance package for plotting estimates and confidence intervals from a fitted model.  I suspect you are interested in plotting a set of estimates derived from a number of strata or a number of surveys.

You should be able to make progress with plotting if you understand the structure of the object created by a call to ds() .

I have an example where I've created an object wren from fitting a detection function to point transect data.  The point estimate of abundance of individuals (and the bounds of the confidence interval) are within that object:

>str(wren$dht$individuals$N)

'data.frame': 1 obs. of  7 variables:

$ Label   : Factor w/ 1 level "Total": 1

$ Estimate: num 33.7

$ se      : num 19.6

$ cv      : num 0.584

$ lcl     : num 11.5

$ ucl     : num 98.3

$ df      : num 120

Let me know if you need more information to produce your plots.

	Eric Rexstad Senior Research Fellow, CREEM, Univ. of St Andrews, Charity SC013532
eric.r...@st-andrews.ac.uk+44 (0)1334 461833 http://erex.github.io The Observatory, Buchanan Gardens, St Andrews KY16 9LZ

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[Joaquín Aldabe]

Thankyou very much Eric!