A set of tools to process Acoustic Doppler Velocimeter data into estimates of the gas transfer velocity (k).
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GDopp is short for 'gas from doppler'. A set of tools to process Acoustic Doppler Velocimeter data into estimates of gas exchange.

###Installing GDopp install this package using

        repos = c("http://usgs-r.github.com", "http://cran.us.r-project.org"),
        dependencies = TRUE, type = "both")

###GDopp overview The GDopp package was created support the autmated analysis Acoustic Doppler Velocimeter data in order to estimate turbulence metrics that can be used to parameterize gas exchange. This package is in active development, so features are expected to change and be added in the near future. At present, the package is designed to interact with data from the Nortek family of ADVs, so the file importing features (see load_adv and load_sen) are limited to those file types.

GDopp Functions (as of v0.1.0)

Function Title
check_adv performs user-specified checks on adv data
coord_transform coordinate transformation
epsilon_to_k convert epsilon to k600
fit_epsilon fit epsilon from block of ADV data
get_adv_checks returns a list of possible check functions for the adv
get_kin_viscosity get kinematic viscosity
get_metadata get measurement details
load_adv load ADV data
load_sen load sensor diagnostic data
temp_calc block-averaged temperature
time_calc block-averaged time
velocity_calc gets along-stream mean velocity
window_adv window ADV data
window_coord block-averaged coordinate shift

##What libraries does GDopp need? This version requires oce. This package is available on CRAN, and will be installed automatically when using the install.packages() instructions above.

##Disclaimer This software is in the public domain because it contains materials that originally came from the U.S. Geological Survey, an agency of the United States Department of Interior. For more information, see the official USGS copyright policy.

Although this software program has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS or the U.S. Government as to the accuracy and functioning of the program and related program material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith.

This software is provided "AS IS."