Description Usage Arguments Details Value See Also Examples
Seasonality in water levels imparts bias to flooding duration
datasets built from short-term water level data. dur.bias
calculates
and presents these biases in visual and tabular form.
Using data from a nearby, user-defined NOAA station, bias is estimated by comparing the relationship between flooding duration and elevation in datasets covering two time periods: (1) the time periodof water level logger deployment, and (2) the reference time period (some number of years).
1 2 3 4 5 6 7 |
data |
water level dataset. must have a time stamp column named 'datetime' with the first ten
digits following the format |
dateCol |
index number of the column in 'data' containing dates. Must be a date/POSIX datatype. |
station |
name or number of NOAA station to be used for reference data. Ideally,
use the station closest to where your water level data was collected. This is fed
to |
ref.period |
downloads NOAA tide data to set reference flooding-elevation relationship. This
is used to evaluate accuracy of flooding duration estimates determined by water level
deployment. Use of whole years is recommended. dates must be entered in format
|
time |
time zone to download reference data ( |
Seasonality in water levels imparts bias to flooding duration datasets
built from short-term water level data. dur.bias
calculates and presents
these biases in visual and tabular form.
(1) A summary of root mean square errors is printed, (2) a data frame of elevations, flooding duration estimates, and their associated bias estimates is saved as output, and (3) two plots are made, graphically showing the relationship between predicted and reference flooding duration curves.
1 2 3 4 5 | ## Not run:
NL_extract <- NL_6min_2013[NL_6min_2013[, 1] < "2013-02-01", ]
dur.bias(data = NL_extract, station = 8518750, ref.period = c("20130101", "20131231"))
## End(Not run)
|
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