read_alec: Read ALEC instruments data
| read_alec | R Documentation |
Read ALEC instruments data
Description
This function can read the CEM and CKU data files.
Usage
read_alec(filename, ...)
Arguments
filename |
the name of the file which the data are to be read from. It can be a CSV file or an XLSX file. |
... |
further arguments passed to read_csv or read_xlsx |
Details
For CEM files, when the absolute x- and y- velocities are below 0 or above 200, all data are NA.
For CKU files, when the chlorophyll data is below 0 or above 400, the value is set to NA. When turbidity is below 0 or above 1000, the value is set to NA.
For both CEM and CKU files, When the temperature is below 0 or above 40, all data are NA.
Value
A tibble containing the data. The contents of the tibble depend on the data file.
Returned variables
- datetime
Date-time
- speed
Current speed (cm / s)
- dir
Current direction (radians)
- ew
East-West velocity (cm / s)
- ns
North-South velocity (cm / s)
- chla
Chlorophyll-a (μg / L)
- turbidity
Turbidity (FTU, Formazin Nephelometric Units)
- temperature
Water temperature (
^\circC)
Examples
## Not run:
fnames = dir("~/Lab_Data/kawatea/", full.names=TRUE, recursive=TRUE)
df = tibble(fnames = fnames)#'
df %>% filter(str_detect(fnames, "CEM")) %>% slice(1) %>% pull(fnames) %>% read_alec()
df %>% filter(str_detect(fnames, "CKU")) %>% slice(1) %>% pull(fnames) %>% read_alec()
## End(Not run)
