diveMove (version 0.9.2)

rqPlot: Plot of quantile regression for speed calibrations

Description

Plot of quantile regression for assessing quality of speed calibrations

Usage

rqPlot(rddepth, speed, z, contours, rqFit, main="qtRegression",
       xlab="rate of depth change (m/s)", ylab="speed (m/s)",
       colramp=colorRampPalette(c("white", "darkblue")),
       col.line="red", cex.pts=1)

Arguments

speed

Speed in m/s.

rddepth

Numeric vector with rate of depth change.

z

A list with the bivariate kernel density estimates (1st component the x points of the mesh, 2nd the y points, and 3rd the matrix of densities).

contours

List with components: pts which should be a matrix with columns named x and y, level a number indicating the contour level the points in pts correspond to.

rqFit

Object of class rq representing a quantile regression fit of rate of depth change on mean speed.

main

String; title prefix to include in ouput plot.

xlab, ylab

axis labels.

colramp

Function taking an integer n as an argument and returning n colors.

col.line

Color to use for the regression line.

cex.pts

A numerical value specifying the amount by which to enlarge the size of points.

Details

The dashed line in the plot represents a reference indicating a one to one relationship between speed and rate of depth change. The other line represent the quantile regression fit.

See Also

diveStats