Description Usage Arguments Value
View source: R/keeling_split.r
keeling
performs keeling isotope analysis, generating a linear fit
using QR regression and a d13C keeling plot.
1 | keeling_split(time, co2, d13c, format = "%Y-%m-01", tz = "UTC")
|
time |
POSIXct timestamps of measurements |
co2 |
numeric co2 concentrations, in ppm |
d13c |
numeric d13C, in per mille |
format |
character format compatible with strptime to split the data by. Defaults to '%Y-%m-01' which indicates monthly regression statistics with floored timestamps (e.g. 2016-01-01 indicates the statistics for the month of January, 2016) |
tz |
timezone interpreted by strptime |
data_frame containing the slope, yintercept, fit statistics including
r_squared
, rmse
, std_error
, and n
, and
lm_obj
the fit object created using the lm function for each time
split
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