Description Usage Arguments Value Author(s) See Also Examples
Calculates the characteristics of observed tidal water levels. Wrapper of the functions extrema
, IT
and IF
1 2 | TidalCharacteristics(h,h0 = h$h0,T2 = 5*60*60, hoffset = 3, filtconst = 1, dtMax = 15,unit = "mins", Tavg = 12.4*60 )
TC <- TidalCharacteristics(h,...)
|
h |
Water level time series. data frame with time and h column |
h0 |
Reference level, either single valued or vector with dimension corresponding to h |
T2 |
'Lower' bound on half the quasi period, but higher than expected stagnant phase; default = 5h |
hoffset |
Offset level, to prevent spurious maxima generation due to small fluctuations |
filtconst |
Filtering constant for smoothing the time series |
dtMax |
Maximum accepted time interval in a continuous series. Bigger time intervals are considered to be gaps |
unit |
Unit of dtMax, Tavg |
Tavg |
Average period of time series |
An object of class Tides
, i.e. a list containing:
HL |
Data frame with extrema |
h |
original water level data frame with additional attributes |
gaps |
a data frame containing start and end times of gaps in the series |
IF |
inundation frequency of the reference level |
ITs |
inundation times at the reference level |
DTs |
dry times at the reference level |
h0 |
reference level |
N |
Total number of cycles in time span |
Tom Cox <tom.cox@ua.ac.be>
1 2 3 | TC <- TidalCharacteristics(waterlevels)
TC
plot(TC)
|
Warning message:
In gapsts(dry$time, dtMax, unit = unit, shiftbegin = TRUE) :
First data point is beginning of gap. To shift t0, dt is estimated from next continuous series
Inundation frequency: 77.9661
Inundations during time span: 45.5
Average inundation height: 37.5413
Average inundation height (per cycle): 37.95385
Average inundation time: 328.8298 mins
Average inundation time (per cycle): 339.6703 mins
Maximal inundation time: 2085 mins
Average dry time: 456.3208 mins
Average dry time (per cycle): 531.5385 mins
Maximal dry time: 10185 mins
Average high water: 327.4152
Average low water: 290.8574
Time span: 30.95139 days
Observations in time span: 30.95139 days or 59 average tidal cycles
Inundations in time span: 45 tidal cycles
Fully observed inundated tidal cycles: 45 full tidal cycles
There were no gaps in the time series
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