tappy 0.10.0

Features

• Outputs a ‘International Hydrographic Organization - Tidal and Water Level Working Group’ standard XML constituent file.

• Uses the IHO standard XML constituent file to make a predicted time series. By far the most frequent request that I get.

• Calculates the node factor at each water elevation measurement. Very important for long time-series (greater than a year).

• Very accurate ephemeris calculations thanks to the Astrolabe library.

• Able to read in different input data sets without changing TAPPY or the input data set. All you have to do is create a file that defines the input data set. Thanks to Pyparsing.

• Added the capability to read compressed files and Internet data streams (actually any URL) directly into TAPPY by using filelike.

• The time-series does not need to have equal intervals. In fact any length of missing data is allowed (though too much missing will cause a poor analysis).

• Can adjust the Rayleigh factor that nearby constituents are compared against to determine what constituents can be differentiated.

• TAPPY chooses the main constituents based upon the length of the time series and infers additional constituents that are known to be specifically related to the main constituents.

• Can filter the tidal energy out of the input signal using transform (FFT), usgs (PL33), doodson, and boxcar methods. | [CompareTidalFilters]

• Can use the tidal filters to zero the time-series before determination of tidal constituents.

• Can pad the usgs, doodson, and boxcar filters with predicted data to minimize edge effects of the filters.

• Convenience function to fill missing values with the time series

Requirements

Python version 3.7.1 or later

SciPy

Install

# To install...
pip install tappy

TAPPY Citations

http://meetingorganizer.copernicus.org/EGU2009/EGU2009-5154.pdf

Please forward any citation of TAPPY to tim at cerazone.net.

Contributions

Development

Any help is appreciated. If you want you could send a patch file to me, or if you would like to make a bunch of changes I can assign you developer privileges to the source code repository. Just contact me at tim at cerazone.net.