TideTable: Computes a tide table

In moritzmn/TideTables: Tide Analysis and Prediction of Predominantly Semi-Diurnal Tides

Computes a tide table

Description

Takes a data frame as input with date time, high water and height information and returns a tide table

Usage

TideTable(
  dataInput,
  otz = 1,
  hwi = "99:99",
  sharp_hwi = TRUE,
  asdate,
  astime,
  aedate,
  aetime,
  ssdate,
  sstime,
  sedate,
  setime,
  stz = 1
)

Arguments

dataInput	A data frame with the columns observation_date, observation_time, high_or_low_water and height. See attached data for correct formats.
otz	The time zone of the observations
hwi	The average of all intervals between the Moon's transit (upper or lower) over the Greenwich meridian and the following high or low waters for all phases of the Moon is known as mean high water lunitidal interval and is abbreviated to high water interval (hwi). Please only supply a value, when you are sure. Otherwise leave the default value "99:99" untouched. hwi is then computed for you.
sharp_hwi	Default is TRUE, which results in a sharp hwi computation. Set on FALSE if you analyze shorter time intervals and EstimateTmhwi function returns NA.
asdate	A string indication the date you want the analysis to start with. Format: "yyyy/mm/dd".
astime	A string indicating the time you want the analysis to start with. Format: "hh:mm:ss"
aedate	A string indication the date you want the analysis to end with. Format: "yyyy/mm/dd".
aetime	A string indicating the time you want the analysis to end with. Format: "hh:mm:ss"
ssdate	Synthesis start date. This indicates the date you want your tide table to start with. Format: See above
sstime	Synthesis start time. The starting time for your tide table. Format: See above
sedate	Synthesis end date. Format: See above
setime	Synthesis end time. Format: See above
stz	Dummy for later extension to modify target time zone.

Value

Returns a list with elements of the analysis, fitting and the tide table for given data

c.table	The complete synthesis data as a data.table object
tide.table	The tide table as a data.table object
lm.coeff	Coefficients for the eight fitted linear models used in the synthesis
diff.analyse	Time in days spanning the analysis
i.analyse	How many different cases where used in the analysis

References

Horn, W. (1960) Some Recent Approaches to Tidal Problems. Int. Hydrogr. Rev. 37(2), 65-84

Godin, Gabriel (1972) The Analysis of Tides. Toronto, 264pp

https://www.bsh.de/DE/PUBLIKATIONEN/_Anlagen/Downloads/Meer_und_Umwelt/Berichte-des-BSH/Berichte-des-BSH_50_de.pdf?__blob=publicationFile&v=13/

https://doi.org/10.5194/os-15-1363-2019

Examples

TideTable(dataInput = observation, asdate = "1991/01/01", 
astime = "12:00:00", 
aedate = "1992/01/01", aetime = "12:00:00", ssdate = "1991/01/01", 
sstime = "00:00:00", sedate = "1991/01/31", setime = "21:00:00")

moritzmn/TideTables documentation built on June 21, 2022, 10:23 a.m.