Preprocessing of all PhenoCam data into a format which can be ingested by the optimization routines etc. the original nested list is flattened for speed.
pr_fm_phenocam(
path = tempdir(),
direction = "rising",
gcc_value = "gcc_90",
threshold = 50,
offset = 264,
spread = 30,
internal = TRUE
)Arguments
- path
a path to 1 or 3-day PhenoCam transition date estimates (no validation checks will be done, so mixed files will lead to mixed or duplicated results!)
- direction
The phenophase considered, "rising" for spring and "falling" for autumn. When using fall the offset should be 365. (default = rising)
- gcc_value
The gcc time series from which the phenophase estimates were derived either (default = gcc_90)
- threshold
Threshold ( the phenophases (10, 25, 50) (default = 50)
- offset
offset of the time series in DOY (default = 264, sept 21)
- spread
maximum distance between CI of phenophase (default = 30) increase this value to include more uncertain phenophase estimates
- internal
return data as structured list to R workspace or write to RDS file (default = TRUE)
Details
In addition to the normal transition dates the offset in julian days to the previous phenophase is included as transition_dates_prior.
Examples
# run with default settings
# looks for transition date files derived
# through phenocamr in your home directory
# change the path to match your setup
if (FALSE) {
phenocam_data = pr_fm_phenocam()
}