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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

0 selected

Laura, … Tiago Marques3

Sep 17

Aerial surveys produces peak in distance 0

Hi Laura, A possible alternative approach to the analysis that Eric is suggesting, would be to set up

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Aerial surveys produces peak in distance 0

Hi Laura, A possible alternative approach to the analysis that Eric is suggesting, would be to set up

Sep 17

Ben Apsley, … Eric Rexstad3

Sep 17

bootstrap abundance estimate for only one species, when ds() model uses species as covariate

Greetings Ben, welcome to the list. When performing a bootstrap, as you know, the transects are being

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bootstrap abundance estimate for only one species, when ds() model uses species as covariate

Greetings Ben, welcome to the list. When performing a bootstrap, as you know, the transects are being

Sep 17

Jason Roberts, … Rachel Fewster6

Sep 13

Estimating availability from multiple surface and dive interval datasets

Hi Jason, list, I think your question boils down to asking which of your two options has better

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Estimating availability from multiple surface and dive interval datasets

Hi Jason, list, I think your question boils down to asking which of your two options has better

Sep 13

Sep 4

October introductory workshop more than half full, three more weeks of registration (26Sep25)

The introductory distance sampling workshop (06-17 October 2025) filled more than half the available

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October introductory workshop more than half full, three more weeks of registration (26Sep25)

The introductory distance sampling workshop (06-17 October 2025) filled more than half the available

Sep 4

Tristen Brush, Eric Rexstad3

Sep 3

Estimating abundance of different age/sex classes using cluster observations (CTDS)

Thanks Eric! That's what I was thinking but wanted to confirm before I go through the work of

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Estimating abundance of different age/sex classes using cluster observations (CTDS)

Thanks Eric! That's what I was thinking but wanted to confirm before I go through the work of

Sep 3

Aug 18

Intro distance sampling workshop 06-17 Oct; registration and widening participation applications now open

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

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Intro distance sampling workshop 06-17 Oct; registration and widening participation applications now open

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

Aug 18

Ariek Norford, Eric Rexstad3

Aug 11

ds() failing to converge on estimate?

Thank you for these suggestions! I was able to get my code running. On Monday, August 4, 2025 at 3:18

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ds() failing to converge on estimate?

Thank you for these suggestions! I was able to get my code running. On Monday, August 4, 2025 at 3:18

Aug 11

Anne, Eric Rexstad3

Aug 7

flat predictions

Thanks, Eric! Removing the 'nadj' term solved my problem. On Friday, August 1, 2025 at 10:16:

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flat predictions

Thanks, Eric! Removing the 'nadj' term solved my problem. On Friday, August 1, 2025 at 10:16:

Aug 7

E L, Eric Rexstad2

Aug 4

Assistance with broad distance bins and habitat heterogeneity

Esther Welcome to the group. You are correct that the figures you provided showed a problem in

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Assistance with broad distance bins and habitat heterogeneity

Esther Welcome to the group. You are correct that the figures you provided showed a problem in

Aug 4

RPE, Eric Rexstad2

Jul 25

error message in checkdata

Don't throw your computer out the window (there may be someone standing below your window). I

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error message in checkdata

Don't throw your computer out the window (there may be someone standing below your window). I

Jul 25

ειρηνη μαλτσακη, Eric Rexstad2

Jul 25

Irini If I understand correctly, your study area is composed of strata (subareas). Your objective (I

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Irini If I understand correctly, your study area is composed of strata (subareas). Your objective (I

Jul 25

landry-hamas-elisee KADJO, Eric Rexstad2

Jul 24

how to get density from chimpanzee nests

Thanks for your question and welcome to the email group. Before I work through an analysis, I want to

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how to get density from chimpanzee nests

Thanks for your question and welcome to the email group. Before I work through an analysis, I want to

Jul 24

Laura, jjr...@gmail.com2

Jul 23

Accounting for spatial autocorrelation in DSMs without including spatial smooths (s(x, y))

Dear Laura, You might want to check out Simon Wood's recent paper on "neighborhood cross

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Accounting for spatial autocorrelation in DSMs without including spatial smooths (s(x, y))

Dear Laura, You might want to check out Simon Wood's recent paper on "neighborhood cross

Jul 23

Laura, Eric Rexstad2

Jul 22

Large segment size in DSM limit the spatial resolution of density covariates

Laura We understand there is a tension between large segment sizes and spatial heterogeneity within

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Large segment size in DSM limit the spatial resolution of density covariates

Laura We understand there is a tension between large segment sizes and spatial heterogeneity within

Jul 22

Ariek Norford, Eric Rexstad4

Jul 22

Estimated abundance in covered region

Ariek Multiple visits to the transects is reflected in effort (effort = actual transect length x

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Estimated abundance in covered region

Ariek Multiple visits to the transects is reflected in effort (effort = actual transect length x

Jul 22

Jul 18

CRAN release of Distance and mrds

Dear Distance List, We are pleased to announce the release of Distance 2.0.1 and mrds 3.0.1 on CRAN.

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CRAN release of Distance and mrds

Dear Distance List, We are pleased to announce the release of Distance 2.0.1 and mrds 3.0.1 on CRAN.

Jul 18

Sunny Murphy, Eric Rexstad4

Jul 8

estimates coming up as 0

Sunny Happy for you to leave this alone, given you've resolved your issues. From: distance-

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estimates coming up as 0

Sunny Happy for you to leave this alone, given you've resolved your issues. From: distance-

Jul 8

ειρηνη μαλτσακη, Eric Rexstad2

Jul 6

Multipliers- visits

Irini Good to hear from you again. I'm guessing your surveys use point transects, rather than

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Multipliers- visits

Irini Good to hear from you again. I'm guessing your surveys use point transects, rather than

Jul 6

Paulina Kukofka, Eric Rexstad2

Jul 1

Incorporating different field of views in CTDS

Paulina The distance sampling analysis can take different camera optics at different stations via the

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Incorporating different field of views in CTDS

Paulina The distance sampling analysis can take different camera optics at different stations via the

Jul 1

Gajanan G Patil, Eric Rexstad2

Jul 1

measurement eror in covariate

Gajanan Can you provide more details about your question? Is this a covariate you want to include in

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measurement eror in covariate

Gajanan Can you provide more details about your question? Is this a covariate you want to include in

Jul 1

ειρηνη μαλτσακη, … abrun...@gmail.com5

Jul 1

Saving a project trouble

Update: Running Windows 11 with Distance 8. Creating a new folder directly on my C:\ drive fixed the

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Saving a project trouble

Update: Running Windows 11 with Distance 8. Creating a new folder directly on my C:\ drive fixed the

Jul 1

Jun 26

Design, implement and promote species monitoring in R

Dear all, I would like to inform you about this course, which will encompass the theory and practice

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Design, implement and promote species monitoring in R

Dear all, I would like to inform you about this course, which will encompass the theory and practice

Jun 26

Maik Henrich, … Tiago Marques7

Jun 26

Adapting dsm for camera trap distance sampling

Hi everyone, I managed to match the standard distance sampling and dsm approaches. The important

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Adapting dsm for camera trap distance sampling

Hi everyone, I managed to match the standard distance sampling and dsm approaches. The important

Jun 26

leob...@gmail.com, Eric Rexstad4

Jun 24

DSM Model Producing Distorted Predictions Despite Clean Inputs and Adequate Sample Size

Hi Eric and all, While cleaning up my data to send out for review, I discovered the issue. It turned

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DSM Model Producing Distorted Predictions Despite Clean Inputs and Adequate Sample Size

Hi Eric and all, While cleaning up my data to send out for review, I discovered the issue. It turned

Jun 24

ειρηνη μαλτσακη, Laura Marshall2

Jun 19

Distance bands instead of perpendicular distance

Hello, Welcome to the list. I'm glad you have found how to analyse binned data in R, binned data

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Distance bands instead of perpendicular distance

Hello, Welcome to the list. I'm glad you have found how to analyse binned data in R, binned data

Jun 19

M Borja, Eric Rexstad3

May 3

density for each transect?

I wasn't quite finished with the previous email: Greetings and welcome to the list. Can you

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density for each transect?

I wasn't quite finished with the previous email: Greetings and welcome to the list. Can you

May 3

Leonard Hambrecht

May 1

DSMextra has been updated

Hello, Just as an FYI for people who have been trying to install the `DSMextra` package. The

unread,

DSMextra has been updated

Hello, Just as an FYI for people who have been trying to install the `DSMextra` package. The

May 1

Asier Rodríguez Larrinaga, Eric Rexstad6

Apr 21

Singularity in Lapack routine

Thanks a lot for your help Eric. Yes, I am aware of the lack of generalization of the intended

unread,

Singularity in Lapack routine

Thanks a lot for your help Eric. Yes, I am aware of the lack of generalization of the intended

Apr 21

Sunny Murphy, Eric Rexstad4

Apr 19

Error when using dht2

I'm not sure what happened to my previous response; really unfortunate that it seems to have

unread,

Error when using dht2

I'm not sure what happened to my previous response; really unfortunate that it seems to have

Apr 19

Apr 16

Final week of registration for May introductory distance sampling workshop

If you are a procrastinator or slow 🐌to get around to things; your time has arrived 🛬. The workshop

unread,

Final week of registration for May introductory distance sampling workshop

If you are a procrastinator or slow 🐌to get around to things; your time has arrived 🛬. The workshop

Apr 16

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