Add Duration Unit Conversation Values
wqb_add_duration_conversions.Rd
Read in the duration-conversion file and code unit values that can be converted and which ones will be removed. Two columns will be added to the duration_unit_codes table in the database to indicate which units are being kept and the conversion factor. Currently duration units are converted to hours.
Details
The list of units to be converted are contained in a csv file in the
extdata folder of the package. The csv file can be edited by adding or
removing rows. To add new rows get the code
and description
values
from the duration_unit_codes
table in the database and paste them into
the csv file.
Do not add new columns, rename columns or rename the file. The file must
only contain the columns: code
, description
, duration_units_to_keep
and duration_value_multiplier_to_hours
.
The code
values in the duration-conversion file are matched to the code
values in the duration_unit_codes
table in the database.
The duration_units_to_keep
column indicates which units are being
converted and which are being removed because they can not be converted or
are not in the aquatic portion of the data. The
duration_value_multiplier_to_hours
column contains the value need to
convert the unit into hours.