StreamDischarge-package: Evaluation of hydrometric measurement.
In houbysvoctem/StreamDischarge: Evaluation of hydrometric measurement.

Description Details Author(s) References Examples

Package for evaluatuion of hydrometric measurement from the stream cross-sections. It uses the point velocity hydrometric measurement data from the stream cross-section. It includes the functions to discharge by three standard methods: graphical Harlachers, mid-section segments, mean-section segments. It also includes the function to evaluate discharge from interpolation of velicities. It can be used to visualise the interpolated mesh of velocities in the stream cross-section.

Package uncludes the functions for calculation of discharge and for visualistion of interpolated point velocitites in the cross-section. Package also includes some measurement data - data_01, data_02.

Functions for users:

Harlacher - calculation of discharge with the graphical Harlacher's method - usable for measurements with 3 and more points in the gauging vertical.

SvisP - calculation of discharge with the mid-section segments method (technical norm ISO 748)

MeziSvisP - calculation of discharge with the mean-section segments method (technical norm ISO 748)

discharge_interpolace - calculation of discharge with the interpolation, that was calibrated in Eliška´s dissertation thesis

print_crossection - from input measurement data interpolates the point velocites and shows then in the rectangular regular grid

Eliska Friedlova (Hasnikova)

Maintainer: Eliska Friedlova (Hasnikova) <e1lda@atlas.cz>

ISO 748:2007 Hydrometry – Measurement of liquid flow in open channels using current-meters or floats

Pebesma, E.J., R.S. Bivand, 2005. Classes and methods for spatial data in R. R News 5 (2), https://cran.r-project.org/doc/Rnews/.

Roger S. Bivand, Edzer Pebesma, Virgilio Gomez-Rubio, 2013. Applied spatial data analysis with R, Second edition. Springer, NY. http://www.asdar-book.org/

Matt Dowle and Arun Srinivasan (2018). data.table: Extension of 'data.frame'. R package version 1.11.0. https://CRAN.R-project.org/package=data.table

Deepayan Sarkar and Felix Andrews (2016). latticeExtra: Extra Graphical Utilities Based on Lattice. R package version 0.6-28. https://CRAN.R-project.org/package=latticeExtra

#calculate discharge with the interpolation
interpolation = 1 #1 for the arithmetical mean
discharge_interpolace(data_01, interpolation)

#calculate discharge with Harlacher graphical method
m = 5
Harlacher(data_01, m)

#calculate discharge with mean-section segments ISO method
SvisP(data_01)

#calculate discharge with mid-section segments ISO method
m = 5
MeziSvisP(data_01, m)

#level plot of interpolated data set velocities
interpolation = 1
grid_size = 0.05
print_crossection(data_01,interpolation,grid_size)