xSec: xSec

In jasonfischer/rivSurveyR: A Package to Process Water Velocities Collected With SonTek Acoustic Doppler Current Profilers

Description

Rotates velocities to be parallel and perpendicular to a cross-section

Usage

xSec(ve, vn, vu, transectHeading)

Arguments

ve	Vector of east velocities within cells
vn	Vector of north velocities within cells. Must be the same length as ve.
vu	Vector of vertical velocities within cells. Must be the same length as ve.
transectHeading	Compass heading of transect, assumes transect begins at river right and heads towards river left.

Value

Returns a data.frame with compass heading of flow perpendicular to cross-section (vxHeading), compass heading of flow parallel to cross-section (vyCompassHeading), arithmetic heading of flow parallel to cross-section (vyArithmeticHeading), difference between flow perpendicular to cross-section and heading of flow within a cell (diffHeading), velocity perpendicular to cross-section (vx), and velocity parallel to cross-section where positive values indicate flow from river right to river left (vy).

See Also

transectHeading

Examples

data(cellVels)
velSub <- cellVels[transectName == "t1",,]
tHeading <- transectHeading(velSub$UTM_X_Proj, velSub$UTM_Y_Proj, velSub$Vel.E, velSub$Vel.N, velSub$cellDepth)
secondary <- xSec(velSub$Vel.E, velSub$Vel.N, velSub$Vel.up, tHeading)

jasonfischer/rivSurveyR documentation built on May 18, 2019, 5:54 p.m.