distance-sampling

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Welcome to the distance sampling e-mail list.

This is a place to ask questions about distance sampling methodology as well as software.

More information on distance sampling can be found at http://distancesampling.org

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Barbara Soto, … Eric Rexstad3

Dec 6

Error in X [, pstart [i] - 1 + 1: object $ nsdf [i]] <- Xp: number of items to replace is not a multiple of replacement length "

Bárbara I have an answer to your first question regarding rqgam.check . That function has been

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Error in X [, pstart [i] - 1 + 1: object $ nsdf [i]] <- Xp: number of items to replace is not a multiple of replacement length "

Bárbara I have an answer to your first question regarding rqgam.check . That function has been

Dec 6

Flocrn, Eric Rexstad3

Dec 1

Year as covariate : 0 density/abundance estimates

Dear all, The problem has been solved by removing the object field. It was also possible to fill the

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Year as covariate : 0 density/abundance estimates

Dear all, The problem has been solved by removing the object field. It was also possible to fill the

Dec 1

Nov 26

DSM with soap film smoother

Dear listfolks, I am trying to run a dsm model that includes a soap film smoother in order to

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DSM with soap film smoother

Dear listfolks, I am trying to run a dsm model that includes a soap film smoother in order to

Nov 26

Evan Curtis, Eric Rexstad3

Nov 23

dht2 for stratified abundance estimates derived from mrds model

Thanks once again Eric! I'll explore a different analysis option for the mrds replicates. Evan On

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dht2 for stratified abundance estimates derived from mrds model

Thanks once again Eric! I'll explore a different analysis option for the mrds replicates. Evan On

Nov 23

Jelisa Oliveras, … Flocrn3

Nov 23

Issue on Regions areas

Dear Jelisa and Eric, I'm also working on detection function with multiple year. I'm trying

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Issue on Regions areas

Dear Jelisa and Eric, I'm also working on detection function with multiple year. I'm trying

Nov 23

Annabel Westell - NOAA Affiliate

Nov 22

Distance package - Warnings and errors

Hello, A few months ago I used the Distance package in R to conduct distance sampling for a dataset

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Distance package - Warnings and errors

Hello, A few months ago I used the Distance package in R to conduct distance sampling for a dataset

Nov 22

Nov 19

Over-estimation of population densities

Hi all, I'm currently Distance software on Windows to estimate the population densities of 5

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Over-estimation of population densities

Hi all, I'm currently Distance software on Windows to estimate the population densities of 5

Nov 19

Nov 18

January introductory distance sampling training; registration deadline 06 December

The introductory workshop, conducted via Zoom, 10-21 January 2022 is beginning to fill. If you would

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January introductory distance sampling training; registration deadline 06 December

The introductory workshop, conducted via Zoom, 10-21 January 2022 is beginning to fill. If you would

Nov 18

Ana Cañadas, … Len Thomas4

Nov 13

problems with distance in R

Hi All, Having corresponded offline with Ana, we've concluded the issues were due to

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problems with distance in R

Hi All, Having corresponded offline with Ana, we've concluded the issues were due to

Nov 13

Samrat Sengupta

Nov 11

Zxz see z see zz xxx xx ass all can w ass zz z zz sssxzzzzzss SSC see as xs za zssszzz zz was as x zz

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Zxz see z see zz xxx xx ass all can w ass zz z zz sssxzzzzzss SSC see as xs za zssszzz zz was as x zz

Nov 11

Ebony James, … Eric Rexstad3

Nov 11

Why is there a difference between my R estimates and my Distance estimates?

Thanks Uğur. That is true. Ebony, please check that you have fitted the same model in both pieces of

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Why is there a difference between my R estimates and my Distance estimates?

Thanks Uğur. That is true. Ebony, please check that you have fitted the same model in both pieces of

Nov 11

Beth Barrow, Eric Rexstad2

Nov 4

Sample Size issues with orangutan nest survey

Beth It is common to have small numbers of spatial replicates in strata for which you wish to make

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Sample Size issues with orangutan nest survey

Beth It is common to have small numbers of spatial replicates in strata for which you wish to make

Nov 4

Nov 1

{Disarmed} Introductory distance sampling training workshop 10-21 January 2022; registration now open

Interactive introductory distance sampling training The University of St Andrews has been training

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{Disarmed} Introductory distance sampling training workshop 10-21 January 2022; registration now open

Interactive introductory distance sampling training The University of St Andrews has been training

Nov 1

Dayron Lopez, Eric Rexstad2

Oct 29

Fit two different functions for two strata

Dayron Yes, it is possible to fit separate detection functions to each of two geographic strata (

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Fit two different functions for two strata

Dayron Yes, it is possible to fit separate detection functions to each of two geographic strata (

Oct 29

vaughn...@gmail.com, … Esperanza Iranzo6

Oct 23

error message when using bootdht

It works now, thank you!! El sáb, 23 oct 2021 a las 14:26, Eric Rexstad (<Eric.Rexstad@st-andrews.

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error message when using bootdht

It works now, thank you!! El sáb, 23 oct 2021 a las 14:26, Eric Rexstad (<Eric.Rexstad@st-andrews.

Oct 23

Oct 22

Introductory distance sampling workshop: widening participation applications now being accepted

The winter offering of the introductory distance sampling workshop offered by CREEM will occur 10-21

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Introductory distance sampling workshop: widening participation applications now being accepted

The winter offering of the introductory distance sampling workshop offered by CREEM will occur 10-21

Oct 22

Sarah Morris, Eric Rexstad2

Oct 21

Making a region in "dssd"

Sarah This won't help you read in your shape file, but I want to be clear that dssd is not used

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Making a region in "dssd"

Sarah This won't help you read in your shape file, but I want to be clear that dssd is not used

Oct 21

Adolfo Garcia, Stephen Buckland4

Oct 20

Seasonal clustering bias

The number of independent detections is number of groups detected when animals are in groups, and

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Seasonal clustering bias

The number of independent detections is number of groups detected when animals are in groups, and

Oct 20

Adolfo Garcia, Eric Rexstad3

Oct 13

Possible overestimation of population size?

Dear Eric Rexstad Thank you for such a quick and informative answer. I'm so glad I came here. El

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Possible overestimation of population size?

Dear Eric Rexstad Thank you for such a quick and informative answer. I'm so glad I came here. El

Oct 13

ducros....@gmail.com, Eric Rexstad6

Oct 12

Error package V.1.0.3 - More parameters than distance bins

Hello Eric, Thank you very much for your detailed answer ! Everything is much clearer to me now.

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Error package V.1.0.3 - More parameters than distance bins

Hello Eric, Thank you very much for your detailed answer ! Everything is much clearer to me now.

Oct 12

Olga Lyashevska, Eric R3

Oct 4

segmentation in dsm

Thanks Eric, I appreciate that! On Friday, October 1, 2021 at 6:29:56 PM UTC+1 erici...@gmail.com

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segmentation in dsm

Thanks Eric, I appreciate that! On Friday, October 1, 2021 at 6:29:56 PM UTC+1 erici...@gmail.com

Oct 4

Daniel Medina, David Lawrence Miller3

Sep 28

Error warning in DSM with smooth terms

Many thanks for your help on this matter Dave, I wouldn't have imagined that could be the cause

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Error warning in DSM with smooth terms

Many thanks for your help on this matter Dave, I wouldn't have imagined that could be the cause

Sep 28

Benjamin Debetencourt, … Eric Howe6

Sep 23

DSM with camera trap distance sampling data

Hi Benjamin, I don't have experience with distance sampling DSMs, however, I agree that it should

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DSM with camera trap distance sampling data

Hi Benjamin, I don't have experience with distance sampling DSMs, however, I agree that it should

Sep 23

Scarlett Taylor, Eric Rexstad3

Sep 16

Hi Eric, Thanks for confirming my suspicions. That's what I was thinking, but I wanted to confirm

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Hi Eric, Thanks for confirming my suspicions. That's what I was thinking, but I wanted to confirm

Sep 16

Antonella Pane, … David Lawrence Miller7

Sep 16

p term in Tweedie distribution-DSM

Thank you very much David! El jueves, 16 de septiembre de 2021 a las 7:26:02 UTC-3, David Lawrence

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p term in Tweedie distribution-DSM

Thank you very much David! El jueves, 16 de septiembre de 2021 a las 7:26:02 UTC-3, David Lawrence

Sep 16

Don Carlos, … MARIAM HISHAM24

Sep 11

Deriving estimates manually based of clustered observations

hi all, can help me to write code on R programming for density destination of minimum local distance

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Deriving estimates manually based of clustered observations

hi all, can help me to write code on R programming for density destination of minimum local distance

Sep 11

Sep 11

density estimation

hi all, can you help me i want code for R programming to find f^(0) (f estimator) to estimate density

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density estimation

hi all, can you help me i want code for R programming to find f^(0) (f estimator) to estimate density

Sep 11

dubults, … l_h_marshall4

Sep 1

DSM prediction results not read back into Distance

An update on this issue. We have now implemented the fix and have a dll which can be distributed to

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DSM prediction results not read back into Distance

An update on this issue. We have now implemented the fix and have a dll which can be distributed to

Sep 1

Lianne Koczur, … Mark Wilson4

Aug 31

Rare Species Modeling

Just one further thought about this. Everything Tiago wrote makes excellent sense, and I like the

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Rare Species Modeling

Just one further thought about this. Everything Tiago wrote makes excellent sense, and I like the

Aug 31

Abigail Schiffmiller, Eric Rexstad2

Aug 15

Using 'transect' vs 'transit' data for DSM

Abigail When using design-based inference, off-effort sightings can be used to aide in fitting the

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Using 'transect' vs 'transit' data for DSM

Abigail When using design-based inference, off-effort sightings can be used to aide in fitting the

Aug 15

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