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Patricio De Souza
,
Erik Marsh
3
Apr 26
Hard to understand low agreement for a date in a model
Hi Erick. You're absolutely right; the problem was the excessive and unnecessary number of
unread,
Hard to understand low agreement for a date in a model
Hi Erick. You're absolutely right; the problem was the excessive and unnecessary number of
Apr 26
ineslopezl...@gmail.com
,
Erik Marsh
3
Apr 24
Model genetic data in cemetery
Hi Erik Thank you for your reply and your suggestions. I didn't include the age of tissue
unread,
Model genetic data in cemetery
Hi Erik Thank you for your reply and your suggestions. I didn't include the age of tissue
Apr 24
Chris Harpel
, …
Christopher Ramsey
4
Apr 23
Question about Age function
Hi Christopher and Erik, Many thanks for both of your replies. Christopher, your solution solved the
unread,
Question about Age function
Hi Christopher and Erik, Many thanks for both of your replies. Christopher, your solution solved the
Apr 23
Sarah Martini
, …
Erik Marsh
6
Mar 30
early/late dates in phase returning outliers
Hi Sarah, Good question and a good choice for regional trends. I agree with Christopher: I would keep
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early/late dates in phase returning outliers
Hi Sarah, Good question and a good choice for regional trends. I agree with Christopher: I would keep
Mar 30
Jason Padgett
,
Christopher Ramsey
2
Mar 30
recurrence intervals and a known age question
Dear Jason Many thanks for your question. P_Sequence does not work with two dates at the same depth -
unread,
recurrence intervals and a known age question
Dear Jason Many thanks for your question. P_Sequence does not work with two dates at the same depth -
Mar 30
Erik Marsh
,
Christopher Ramsey
3
Mar 26
a depth sequence for freshwater ΔRs?
Thanks Christopher, this works well. In this case, I think we will need a new model of lake levels
unread,
a depth sequence for freshwater ΔRs?
Thanks Christopher, this works well. In this case, I think we will need a new model of lake levels
Mar 26
Christopher Ramsey
2
Jan 13
Internet connection
It should be working again now. Christopher > On 13 Jan 2026, at 12:21, 'Christopher Ramsey
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Internet connection
It should be working again now. Christopher > On 13 Jan 2026, at 12:21, 'Christopher Ramsey
Jan 13
Robert Kelly
,
Christopher Ramsey
6
12/19/25
P_Sequence age-depth model output
Dear Bob Yes - I think that would be hard to manage. The interpolation process tries to even up the
unread,
P_Sequence age-depth model output
Dear Bob Yes - I think that would be hard to manage. The interpolation process tries to even up the
12/19/25
Lu Wen Liu
, …
Erik Marsh
4
12/17/25
Using a known-age sample to model systematic offset in OxCal
Hi Lu-Wen Liu, I would take a look at the sequence of when the samples were harvested. For example,
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Using a known-age sample to model systematic offset in OxCal
Hi Lu-Wen Liu, I would take a look at the sequence of when the samples were harvested. For example,
12/17/25
Rob Witter
,
MILLARD, ANDREW R.
2
12/2/25
Computing probabilities of temporal rank and order
Hello Rob, It is a bit complicated but can be done by manipulating the OxCal output. There are two
unread,
Computing probabilities of temporal rank and order
Hello Rob, It is a bit complicated but can be done by manipulating the OxCal output. There are two
12/2/25
Sarah Martini
11/27/25
Poor agreement KDE Plot Kernel
Hello all! I recently ran into an issue where a model returned the "Warning! Poor agreement
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Poor agreement KDE Plot Kernel
Hello all! I recently ran into an issue where a model returned the "Warning! Poor agreement
11/27/25
Michael Berry
,
Christopher Ramsey
3
11/24/25
Multple graphical analyses on a sible page
Dear Michael Yes - you can do this in OxCal. Use the [ View > Plot stacks ] function from the
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Multple graphical analyses on a sible page
Dear Michael Yes - you can do this in OxCal. Use the [ View > Plot stacks ] function from the
11/24/25
riedese...@gmail.com
,
Christopher Ramsey
3
11/11/25
Exporting probability distributions in calBP
Thank you very much. Christopher Ramsey schrieb am Dienstag, 11. November 2025 um 14:02:14 UTC+1: For
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Exporting probability distributions in calBP
Thank you very much. Christopher Ramsey schrieb am Dienstag, 11. November 2025 um 14:02:14 UTC+1: For
11/11/25
Chris Chinnock (Chris)
,
Christopher Ramsey
5
11/7/25
Calculating and interpreting Difference
Dear Chris Yes - the negative numbers imply that the events might be in the other order (presumably
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Calculating and interpreting Difference
Dear Chris Yes - the negative numbers imply that the events might be in the other order (presumably
11/7/25
Brett Parbus
, …
MILLARD, ANDREW R.
3
11/6/25
Weighting dates within a phase
Dear Brett, Perhaps you can explain a bit more what you are aiming to calculate. What are you hoping
unread,
Weighting dates within a phase
Dear Brett, Perhaps you can explain a bit more what you are aiming to calculate. What are you hoping
11/6/25
Patricio De Souza
,
MILLARD, ANDREW R.
3
10/30/25
How to define the time span occupation of a site
Thanks a lot, Andrew. You really helped me! El jueves, 30 de octubre de 2025 a la(s) 11:39:59 am UTC-
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How to define the time span occupation of a site
Thanks a lot, Andrew. You really helped me! El jueves, 30 de octubre de 2025 a la(s) 11:39:59 am UTC-
10/30/25
Morley Eldridge
,
Christopher Ramsey
3
10/14/25
New question on wiggle match dating - models seemingly not reflecting gap
Christopher Thank you so much! I had misinterpreted the help webpage 'tree ring sequence'
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New question on wiggle match dating - models seemingly not reflecting gap
Christopher Thank you so much! I had misinterpreted the help webpage 'tree ring sequence'
10/14/25
MILLARD, ANDREW R.
10/13/25
RE: Cremation outlier
Hi Chris, From your description it seems that all the chronological information about this cremation
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RE: Cremation outlier
Hi Chris, From your description it seems that all the chronological information about this cremation
10/13/25
Chris Chinnock (Chris)
, …
Seren Griffiths
5
10/8/25
Combine and outlier
Apologies for the delay in replying to all of the above. All very helpful comments as usual.
unread,
Combine and outlier
Apologies for the delay in replying to all of the above. All very helpful comments as usual.
10/8/25
Erik Marsh
,
Christopher Ramsey
3
10/7/25
terms and units of the k parameter in P_Sequences
Thanks Christopher! I will go back and take another look at those papers. -Erik On Tuesday, October 7
unread,
terms and units of the k parameter in P_Sequences
Thanks Christopher! I will go back and take another look at those papers. -Erik On Tuesday, October 7
10/7/25
Erik Marsh
,
MILLARD, ANDREW R.
3
10/7/25
cross-reference k parameter in two P_Sequences
Thanks Andrews, helpful as always! – Erik On Tuesday, October 7, 2025 at 5:12:27 AM UTC-3 MILLARD,
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cross-reference k parameter in two P_Sequences
Thanks Andrews, helpful as always! – Erik On Tuesday, October 7, 2025 at 5:12:27 AM UTC-3 MILLARD,
10/7/25
Morley Eldridge
, …
MILLARD, ANDREW R.
16
10/1/25
Wiggle Match dating including post-bomb sample
On Wednesday, October 1, 2025 at 4:43:53 PM UTC-7 Morley Eldridge wrote: The other sets of samples
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Wiggle Match dating including post-bomb sample
On Wednesday, October 1, 2025 at 4:43:53 PM UTC-7 Morley Eldridge wrote: The other sets of samples
10/1/25
Marge Belcastro
, …
Richard Staff
7
10/1/25
Issue with samples when I "plot on curve"
Thank you for the clarification. On Wed, Oct 1, 2025, 12:09 AM 'Derek Hamilton' via OxCal
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Issue with samples when I "plot on curve"
Thank you for the clarification. On Wed, Oct 1, 2025, 12:09 AM 'Derek Hamilton' via OxCal
10/1/25
Sarah Martini
,
Erik Marsh
4
9/11/25
Outliers and shifting dates?
Hi Sarah, Those are both identical ways of coding that phase, but the multiple runs of the same code
unread,
Outliers and shifting dates?
Hi Sarah, Those are both identical ways of coding that phase, but the multiple runs of the same code
9/11/25
Sarah Martini
, …
Christopher Ramsey
8
9/10/25
Incorporating Apatite and Collagen Dates in one model
Dear both The only caveat with this is that it assumes the offset is the same for the different
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Incorporating Apatite and Collagen Dates in one model
Dear both The only caveat with this is that it assumes the offset is the same for the different
9/10/25
Sarah Martini
, …
Christopher Ramsey
4
9/10/25
Different ways to summarize phases
Span and interval are often similar: Span is the span of the events actually given in the model
unread,
Different ways to summarize phases
Span and interval are often similar: Span is the span of the events actually given in the model
9/10/25
Tommaso Tesi
,
Christopher Ramsey
2
9/8/25
negative BP values
This will be because in general OxCal takes astronomical year dates as the input. There is more
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negative BP values
This will be because in general OxCal takes astronomical year dates as the input. There is more
9/8/25
Kelly B.
,
Erik Marsh
2
8/30/25
Multiple p-sequences for one sediment core
Hi Kelly – 1. You can do a single P_Sequence and change the ΔR midway (see code below). R_Dates will
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Multiple p-sequences for one sediment core
Hi Kelly – 1. You can do a single P_Sequence and change the ΔR midway (see code below). R_Dates will
8/30/25
Markku Oinonen
, …
Erik Marsh
5
8/6/25
Combining Last-query distributions of multiple sequences
Dear John and Erik, Ok, now I had time to check out the model results. First, I ran V_Sequence models
unread,
Combining Last-query distributions of multiple sequences
Dear John and Erik, Ok, now I had time to check out the model results. First, I ran V_Sequence models
8/6/25
Chris Harpel
, …
Erik Marsh
4
8/5/25
Last query
Hi Chris – the Last command works as a query, not a prior. Instead, I would try making a sequence out
unread,
Last query
Hi Chris – the Last command works as a query, not a prior. Instead, I would try making a sequence out
8/5/25