Dear Maxwell, thank you very much for your video tutorials, which have been of great help to us beginners. I would like to ask you about the dcc function in R. I encountered an issue where it shows 'treeclim tries to use the maximum overlap in timespan for chronology and climate data. The overlap starts in NA, but to be able to use climate data from the previous year(s) (as you chose by setting 'selection' accordingly), the analysis starts in NA. Error in (start_year + offset):end_year: argument of length 0.' I saw someone else had the same problem in the comment section. Have there been any updates on this issue? I'd like to know the reason. Thank you.
Confusing! Do you need to run dcc function with climate of previous year’s May to current year’s October, if the chronology is residual? Pre whitening removes autocorrelation (persisrence). Then why is it necessary to look for -5 months? Can you explain it?
Dear Maxwell, great tutorials, thank you, amigo. I just have a couple of questions with regard to this function. As I am only using CWD (from 1975:2011) as clim.dat and tr. chrono (1960:2011), I am not being able to run the previous year, also when I input: selection= .mean(6:8), the package cries this: treeclim needs at least two var. for calibration. So, I am only running selection= 6:8, in either static or evolving. Because for FIN cwd values are mostly in the summer.
Hi Diego - I believe there is a limitation in how the function runs that requires it to have at least two variables but your solution looks like it should work to see the monthly results. You might try the .mean function and a second argument to have two variables. I'd have to dig into the code to see what's going on.
Hello Max I'm a beginner when it comes to using R in dendronchronology studies and I follow your steps explained in your video for the treeclim package, I already had a chronology made, same with the date for temperatures and precipitation but when I want to run the code to made that dcc I've got this error treeclim tries to use the maximum overlap in timespan for chronology and climate data. The overlap starts in NA, but to be able to use climate data from the previous year(s) (as you chose by setting 'selection' accordingly), the analysis starts in NA. Error in (start_year + offset):end_year : argument of length 0 and I don't what to do to solve can you give me a piece of advice on how to solve. Thank you
The treeclim() package is the one you will need to run the dcc() function. You can also do climate-growth response analysis in other dendro packages like dendrotools() but this uses daily climate data.
Hi, i´m start todo do some process in R, but i don´t know how create or generate .rwl docs or archives? how i can generate that? i see this format of docs in your code, for that i'm ask me
Hi Gustavo - to create rwl files watch my videos on CooRecorder and Cdendro. You can also download open source data from the International Tree Ring Data Bank.
Thanks Stockton, love your tutorials, it is indeed very helpful.
Thank you so much for this and providing the code as well. It was so helpful! :)
Love from Poland :) this really helped me to grasp the idea! Thank you soo much!
Thanks for making this tutorial. It's very helpful
Here you go! github.com/chrismgentry/rNADEF
Dear Maxwell, thank you very much for your video tutorials, which have been of great help to us beginners. I would like to ask you about the dcc function in R. I encountered an issue where it shows 'treeclim tries to use the maximum overlap in timespan for chronology and climate data. The overlap starts in NA, but to be able to use climate data from the previous year(s) (as you chose by setting 'selection' accordingly), the analysis starts in NA. Error in (start_year + offset):end_year: argument of length 0.' I saw someone else had the same problem in the comment section. Have there been any updates on this issue? I'd like to know the reason. Thank you.
Confusing!
Do you need to run dcc function with climate of previous year’s May to current year’s October, if the chronology is residual? Pre whitening removes autocorrelation (persisrence). Then why is it necessary to look for -5 months? Can you explain it?
Dear Maxwell, great tutorials, thank you, amigo. I just have a couple of questions with regard to this function. As I am only using CWD (from 1975:2011) as clim.dat and tr. chrono (1960:2011), I am not being able to run the previous year, also when I input: selection= .mean(6:8), the package cries this: treeclim needs at least two var. for calibration. So, I am only running selection= 6:8, in either static or evolving. Because for FIN cwd values are mostly in the summer.
Hi Diego - I believe there is a limitation in how the function runs that requires it to have at least two variables but your solution looks like it should work to see the monthly results. You might try the .mean function and a second argument to have two variables. I'd have to dig into the code to see what's going on.
@@rawkton Thank you very much amigo, I am gonna check it out.
Hello Max I'm a beginner when it comes to using R in dendronchronology studies and I follow your steps explained in your video for the treeclim package, I already had a chronology made, same with the date for temperatures and precipitation but when I want to run the code to made that dcc I've got this error treeclim tries to use the maximum overlap in timespan for chronology and climate data. The overlap starts in NA, but to be able to use climate data from the previous year(s) (as you chose by setting 'selection' accordingly), the analysis starts in NA.
Error in (start_year + offset):end_year : argument of length 0 and I don't what to do to solve can you give me a piece of advice on how to solve.
Thank you
Hi Cristian, if you email me the code I might be able to determine what the error is.
@@rawkton can you tell me what's your email please. Thank you
@@rawkton i don't know if my previous message was sent because RUclips acts very weird but I was asking what is your e-mail. Thank you!
rmaxwell2 at radford.edu
Hi! Can you please tell me the alternative package for dcc to run climate data response ! Will be great full to you
The treeclim() package is the one you will need to run the dcc() function. You can also do climate-growth response analysis in other dendro packages like dendrotools() but this uses daily climate data.
Hi, i´m start todo do some process in R, but i don´t know how create or generate .rwl docs or archives? how i can generate that? i see this format of docs in your code, for that i'm ask me
Hi Gustavo - to create rwl files watch my videos on CooRecorder and Cdendro. You can also download open source data from the International Tree Ring Data Bank.
Thank's @@rawkton, i wil watch this videos, thank´s for answer
YES
can you show the format of csv file of chronology table?