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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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brother jaymar
,
Eric Rexstad
3
1:33 PM
need guidance in dealing with single observations and unidentified species
Hi Eric, Thank you for your response. As I noted later in my message, I am aware of proration - I did
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need guidance in dealing with single observations and unidentified species
Hi Eric, Thank you for your response. As I noted later in my message, I am aware of proration - I did
1:33 PM
juan pablo Zurano
,
Eric Rexstad
2
Jun 19
error using dht2: >1 Area defined for a single stratum label, check data
Juan To be honest, I'm not sure it is possible to achieve what you request. You have one
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error using dht2: >1 Area defined for a single stratum label, check data
Juan To be honest, I'm not sure it is possible to achieve what you request. You have one
Jun 19
Amira Salom
,
Eric Rexstad
3
Jun 18
CTDS-bootdht return differs from dht2
Hi, After showing Eric the detection distance distribution, he pointed out that my truncation
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CTDS-bootdht return differs from dht2
Hi, After showing Eric the detection distance distribution, he pointed out that my truncation
Jun 18
Eric Rexstad
Jun 13
Early, very early notice of likely introductory distance sampling workshop, October 2024
Hello distance sampling list Hope the northern hemisphere summer is going well for all. I wanted to
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Early, very early notice of likely introductory distance sampling workshop, October 2024
Hello distance sampling list Hope the northern hemisphere summer is going well for all. I wanted to
Jun 13
Takahashi Megumi
,
Eric Rexstad
3
May 30
How to derive a encounter rate variance
Dear Eric, I appreciate your response and suggestion. > Are you using MCDS or mrds to fit your
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How to derive a encounter rate variance
Dear Eric, I appreciate your response and suggestion. > Are you using MCDS or mrds to fit your
May 30
juan pablo Zurano
,
Eric Rexstad
3
May 24
Plotting df Model with Two Covariables
Dear Eric Thank you very much for your answer. I have created a plot using both covariates as follows
unread,
Plotting df Model with Two Covariables
Dear Eric Thank you very much for your answer. I have created a plot using both covariates as follows
May 24
Emeline Auda
, …
Eric Howe
6
May 23
Correcting effective survey duration in camera trap survey using still images
Good day Emeline, Sorry for the delay, and apologies if I misinterpret some of what you wrote.
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Correcting effective survey duration in camera trap survey using still images
Good day Emeline, Sorry for the delay, and apologies if I misinterpret some of what you wrote.
May 23
Lyndon Brooks
,
Eric Rexstad
5
May 21
NAs are not allowed in subscripted assignments
Eric wrote back to me with the following advice: "I've given your question some more thought
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NAs are not allowed in subscripted assignments
Eric wrote back to me with the following advice: "I've given your question some more thought
May 21
PABLO PALENCIA MAYORDOMO
,
Laura Marshall
2
May 17
dsims questions
Dear Pablo, Firstly, I have not yet put a lot of thought into using dsims for camera trap survey
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dsims questions
Dear Pablo, Firstly, I have not yet put a lot of thought into using dsims for camera trap survey
May 17
abrun...@gmail.com
,
Eric Rexstad
2
May 16
MCDS in Program Distance vs. R
Andrea Ticking both boxes in DistWin will not fit a model that uses stratum as a covariate in the
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MCDS in Program Distance vs. R
Andrea Ticking both boxes in DistWin will not fit a model that uses stratum as a covariate in the
May 16
Andrew Pettit
,
Eric Rexstad
3
May 11
Plotting Variance For All Species in A For Loop
Andrew Working with the code you provided, I've modified the code you provided to produce a
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Plotting Variance For All Species in A For Loop
Andrew Working with the code you provided, I've modified the code you provided to produce a
May 11
Catarina T. Fonseca
,
Eric Rexstad
3
May 9
Different data/obs_table for ds() and dht()
Hello Eric, First, thank you for your response and advice. I am thinking that maybe I should be a
unread,
Different data/obs_table for ds() and dht()
Hello Eric, First, thank you for your response and advice. I am thinking that maybe I should be a
May 9
Len Thomas
2
May 9
Online training workshop: camera trap distance sampling, 27-31 May 2024
Dear Distance sampling colleagues, Just a reminder that registration for our up-coming online
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Online training workshop: camera trap distance sampling, 27-31 May 2024
Dear Distance sampling colleagues, Just a reminder that registration for our up-coming online
May 9
Morgane Pommier
, …
Eric Rexstad
12
May 3
Survey design: transect close together, but relatively low speed platform
Thanks for sharing the images from your drone Marina. Helpful to see the data derived from different
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Survey design: transect close together, but relatively low speed platform
Thanks for sharing the images from your drone Marina. Helpful to see the data derived from different
May 3
Lisa Marie Leclerc
,
Eric Rexstad
2
Apr 29
DSM- extract the CV as shapefile
Lisa Here is a very simple answer to your question, based upon the use of dsm_var_gam for
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DSM- extract the CV as shapefile
Lisa Here is a very simple answer to your question, based upon the use of dsm_var_gam for
Apr 29
Lyndon Brooks
2
Apr 19
Trial vs io configuration
Hello, To answer my own question: On our data, the trial configuration was a better fit (the mrmodel
unread,
Trial vs io configuration
Hello, To answer my own question: On our data, the trial configuration was a better fit (the mrmodel
Apr 19
Joshua Meza-Fidalgo
,
Eric Rexstad
3
Apr 4
Issue with Study Design in R
Eric was able to successfully help me diagnose the problem. I was trying to use kilometers as my unit
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Issue with Study Design in R
Eric was able to successfully help me diagnose the problem. I was trying to use kilometers as my unit
Apr 4
Nilanjan Basu
,
Eric Rexstad
2
Mar 23
Inquiry about camera trap based Distance Sampling (CTDS)
Nilanjan Welcome to the group. I suggest you read Chapter 10 of the Users Guide for the Distance for
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Inquiry about camera trap based Distance Sampling (CTDS)
Nilanjan Welcome to the group. I suggest you read Chapter 10 of the Users Guide for the Distance for
Mar 23
Michelle Bustamante
,
Eric Rexstad
2
Mar 19
Hi Help me please
Good morning Michelle If you apply the function summary(BQ.uni) you will discover that the fitted
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Hi Help me please
Good morning Michelle If you apply the function summary(BQ.uni) you will discover that the fitted
Mar 19
margaret....@gmail.com
,
Eric Rexstad
2
Mar 14
Sample Area
Maggie Thanks for your question; afraid I cannot diagnose the problem at this point. By "Sample.
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Sample Area
Maggie Thanks for your question; afraid I cannot diagnose the problem at this point. By "Sample.
Mar 14
Erica Alex
,
Eric Rexstad
2
Mar 10
bootdht returns blank data frame
Erica Using a pooled detection function to produce species-specific density estimates runs the risk
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bootdht returns blank data frame
Erica Using a pooled detection function to produce species-specific density estimates runs the risk
Mar 10
Niccolò Bavieri
Mar 8
Info DS Analysis
Good morning, Some questions about Distance Sampling Analyses. In my study, I have travelled many
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Info DS Analysis
Good morning, Some questions about Distance Sampling Analyses. In my study, I have travelled many
Mar 8
Colin Guilfoyle
Mar 7
Data request
Hi all, As part of a potential study comparing the results produced from the two survey methods (
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Data request
Hi all, As part of a potential study comparing the results produced from the two survey methods (
Mar 7
Libby White
,
Eric Rexstad
4
Mar 5
Error in cat("Sample fraction :", ifelse(attr(x, "sample_fraction")
Hi Eric! Thanks for your response. That example is really helpful. Best, Libby On Tuesday, March 5,
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Error in cat("Sample fraction :", ifelse(attr(x, "sample_fraction")
Hi Eric! Thanks for your response. That example is really helpful. Best, Libby On Tuesday, March 5,
Mar 5
Iris Berger
,
Eric Rexstad
2
Mar 1
Error when using predict() to get effective areas
Hello Iris. You've described distance sampling analysis on an industrial scale, performing
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Error when using predict() to get effective areas
Hello Iris. You've described distance sampling analysis on an industrial scale, performing
Mar 1
clac...@googlemail.com
,
Eric Rexstad
3
Feb 27
Accessing fitted values to get P's...
Thanks Eric! I think this will work for what I need. Very much appreciated indeed Claire On Tuesday,
unread,
Accessing fitted values to get P's...
Thanks Eric! I think this will work for what I need. Very much appreciated indeed Claire On Tuesday,
Feb 27
Camille Ollier
,
Eric Rexstad
3
Feb 26
dht2 - individuals/clusters
Hi Eric, Thanks for your response, and I understand. I appreciate that you have submitted the issue
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dht2 - individuals/clusters
Hi Eric, Thanks for your response, and I understand. I appreciate that you have submitted the issue
Feb 26
Julia Saltzman
2
Feb 20
Density Surface Models
Hi all! Sorry for another message. For some reason my attachments didn't show up in the email. I
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Density Surface Models
Hi all! Sorry for another message. For some reason my attachments didn't show up in the email. I
Feb 20
Distance
Feb 19
Request for Photo's
Dear Distance Sampling List, We are currently in the process of updating our webpages and we would
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Request for Photo's
Dear Distance Sampling List, We are currently in the process of updating our webpages and we would
Feb 19
Eric Rexstad
Feb 14
Registration closing in one week; introductory distance sampling workshop 04-15Mar 2024
The introductory distance sampling workshop taking place via Zoom 04-15 March is drawing closer.
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Registration closing in one week; introductory distance sampling workshop 04-15Mar 2024
The introductory distance sampling workshop taking place via Zoom 04-15 March is drawing closer.
Feb 14