Import data from a Loligo Systems Witrox O2 transmitter
Imports the standard txt file output from Loligo Systems Witrox fiber optic O2 transmitters and converts the data into one or more data frames.
1 2 3
a character string. The filepath for the file to be read.
a character string. The unit of O2 measurement to be output in the data frame. Options are described in
a character string. The date format to be passed to
logical. Should channels without any O2 data be dropped? Default is
logical. Should a list of data frames be returned with a separate data frame for each channel? Default is
The following Loligo Systems fiber optic O2 transmitters are supported:
If you would like support for the Witrox 1, email me a data file from this device.
A data frame (or list of data frames) is returned.
Date and time, POSIXlt format.
Duration of measurement trial (minutes).
Atmospheric pressure (mbar).
Phase recorded. Phase is inversely related to O2.
Temperature recorded or defined at beginning of measurement trial.
Oxygen measurement in desired unit as determined by
Channel columns (CH_...) are repeated for each channel.
split_channels = TRUE, then "
CH_X_" is removed from the column names and multiple data frames are returned in a list.
Matthew A. Birk, firstname.lastname@example.org
1 2 3 4 5 6 7 8 9 10 11 12 13
## Not run: file <- system.file('extdata', 'witrox_file.txt', package = 'respirometry') import_witrox(file, o2_unit = 'umol_per_l') # Oops. I forgot to change the salinity value when I calibrated # the instrument. Override the values in the file for 35 psu. import_witrox(file, o2_unit = 'umol_per_kg', overwrite_sal = 35) # I want each channel as a separate data frame. data_list <- import_witrox(file, split_channels = TRUE) data_list$CH_3 # here's the channel 3 data frame. ## End(Not run)
Want to suggest features or report bugs for rdrr.io? Use the GitHub issue tracker.