Description Usage Arguments Details Value Author(s) References See Also Examples
These functions create a TDRcalibrate
object
which is necessary to obtain dive summary statistics.
1 2 3 | calibrateSpeed(x, tau=0.1, contour.level=0.1, z=0, bad=c(0, 0),
main=slot(getTDR(x), "file"), coefs, plot=TRUE,
postscript=FALSE, ...)
|
x |
An object of class |
tau |
numeric scalar: quantile on which to regress speed on rate
of depth change; passed to |
contour.level |
numeric scalar: the mesh obtained from the bivariate kernel density estimation corresponding to this contour will be used for the quantile regression to define the calibration line. |
z |
numeric scalar: only changes in depth larger than this value will be used for calibration. |
bad |
numeric vector of length 2 indicating that only rates of depth change and speed greater than the given value should be used for calibration, respectively. |
coefs |
numeric: known speed calibration coefficients from
quantile regression as a vector of length 2 (intercept, slope). If
provided, these coefficients are used for calibrating speed,
ignoring all other arguments, except |
main, ... |
Arguments passed to |
plot |
logical: whether to plot the results. |
postscript |
logical: whether to produce postscript file output. |
This calibrates speed readings following the procedure outlined in Blackwell et al. (1999).
An object of class TDRcalibrate
.
Sebastian P. Luque spluque@gmail.com
Blackwell S, Haverl C, Le Boeuf B, Costa D (1999). A method for calibrating swim-speed recorders. Marine Mammal Science 15(3):894-905.
1 2 3 4 5 6 7 8 | ## Continuing the Example from '?calibrateDepth':
utils::example("calibrateDepth", package="diveMove",
ask=FALSE, echo=FALSE)
dcalib # the 'TDRcalibrate' that was created
## Calibrate speed using only changes in depth > 2 m
vcalib <- calibrateSpeed(dcalib, z=2)
vcalib
|
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