Last active
August 14, 2017 18:14
-
-
Save SimonGoring/877dd71cc3ad6bf8531e to your computer and use it in GitHub Desktop.
A quick example to load a data file from Neotoma and then run Bacon.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# This needs to run in the directory in which you have Bacon installed. | |
# If you do not currently have the `neotoma` package installed then uncomment | |
# and run the following code. Right now you will need to install the package from GitHub | |
# because our latest bug fixes haven't been pushed up into CRAN. | |
# | |
# install.packages('devtools') | |
# library(devtools) | |
# install_github('ropensci/neotoma') | |
# | |
# The Neotoma package is described more fully here: | |
# | |
# Goring, S., Dawson, A., Simpson, G. L., Ram, K., Graham, R. W., Grimm, E. C., & | |
# Williams, J. W.. (2015). neotoma: A Programmatic Interface to the Neotoma | |
# Paleoecological Database, 1(1), Art. 2. DOI: http://doi.org/10.5334/oq.ab | |
# | |
# | |
library(neotoma) | |
library(maps) # you may also want to install this. | |
# There are (surprisingly?) no data records from Nevada currently. Instead we will | |
# pull records from California. In this call I want to find high elevation sites | |
# because they're kind of interesting. | |
ca_pollen <- get_dataset(gpid = 'California', datasettype = 'pollen', | |
ageold = 10000, altmin=1000) | |
plot(get_site(ca_pollen)[,c('long', 'lat')], | |
xlim = c(-125, -115), ylim=c(30, 45), | |
pch=19, col=2) | |
map('world', add=TRUE) | |
map("state", add=TRUE) | |
# Now we can download the records. | |
# You should see the site names running by. As you do this, reflect on all the work | |
# that's gone into these records and give thanks to the named and unnamed workers who | |
# toiled behind a microscope for months at a time so that you could download their data | |
# in mere seconds. | |
ca_download <- get_download(ca_pollen) | |
# For this example we should find the one that gives us the most dated material. | |
dated_samples <- get_chroncontrol(ca_download) | |
# This next line is just FYI - we're getting a vector of the number of dates in each core. | |
# Some will return a NULL if there is no associated control table. This happens for single | |
# stratigraphic pollen sections for example. | |
sapply(dated_samples, function(x)nrow(x$chron.control)) | |
# The last core (Taquitz Meadow) has 6, controls: | |
# The number is quotes is the dataset number. To choose a different dataset look at the | |
# available datasets and enter in a different number. | |
plot(dated_samples[['15594']]$chron.control[,c('depth', 'age')]) | |
# You can try a few different ones to see how things look. | |
# So Taquitz Meadow looks good. We can look at it in the Neotoma Explorer like this: | |
# http://apps.neotomadb.org/explorer/?datasetid=15594 | |
# The original model was generated in Bacon, let's see how well we do: | |
write_agefile(ca_download[['15594']], chronology = 1, | |
path = '.', corename = 'TAQUITZ', cal.prog = 'Bacon') | |
# Source Bacon . . . | |
source('Bacon.R') | |
# Please note that this will actually take a very very long time. It might be worth picking a different site. | |
Bacon('TAQUITZ') |
I didn't get a notification of this very old comment. Bacon.R is part of the Bacon package, which can be downloaded from: http://www.chrono.qub.ac.uk/blaauw/bacon.html
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
@SimonGoring ... where is Bacon.R?