Methods for visually assessing results of ZOC procedure
Description
Plots for comparing the zerooffset corrected depth from a
TDRcalibrate
object with the uncorrected data in a
TDR
object, or the progress in each of the filters
during recursive filtering for ZOC (calibrateDepth
).
Usage
1 2 3 4 
Arguments
x 

y 
matrix with the same number of rows as there are observations
in 
xlim 

ylim 
numeric vector of length 2 (upper, lower) with axis limits. Defaults to range of input. 
ylab 
character strings to label the corresponding yaxis. 
... 
Arguments passed to 
Details
The TDR
,matrix
method produces a plot like those shown
in Luque and Fried (2011).
The TDR
,TDRcalibrate
method overlays the corrected depth
from the second argument over that from the first.
Value
Nothing; a plot as side effect.
Methods
 plotTDR
signature(x="TDR", y="matrix")
: This plot helps in finding appropriate parameters fordiveMove:::.depthFilter
, and consists of three panels. The upper panel shows the original data, the middle panel shows the filters, and the last panel shows the corrected data. method=“visual” incalibrateDepth
. plotTDR
signature(x="TDR", y="TDRcalibrate")
: This plots depth from theTDRcalibrate
object over the one from theTDR
object.
Author(s)
Sebastian P. Luque spluque@gmail.com
References
Luque, S.P. and Fried, R. (2011) Recursive filtering for zero offset correction of diving depth time series. PLoS ONE 6:e15850
See Also
calibrateDepth
, .zoc
Examples
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29  ## Using the Example from '?diveStats':
utils::example("diveStats", package="diveMove",
ask=FALSE, echo=FALSE)
## Plot filters for ZOC
## Work on first phase (trip) subset, to save processing time, since
## there's no drift nor shifts between trips
tdr < divesTDR[1:15000]
## Try window widths (K), quantiles (P) and bound the search (db)
K < c(3, 360); P < c(0.5, 0.02); db < c(0, 5)
d.filter < diveMove:::.depthFilter(depth=getDepth(tdr),
k=K, probs=P, depth.bounds=db,
na.rm=TRUE)
old.par < par(no.readonly=TRUE)
plotZOC(tdr, d.filter, ylim=c(0, 6))
par(old.par)
## Plot corrected and uncorrected depth, regardless of method
## Look at three different scales
xlim1 < c(getTime(divesTDR)[7100], getTime(divesTDR)[11700])
xlim2 < c(getTime(divesTDR)[7100], getTime(divesTDR)[7400])
xlim3 < c(getTime(divesTDR)[7100], getTime(divesTDR)[7200])
par(mar=c(3, 4, 0, 1) + 0.1, cex=1.1, las=1)
layout(seq(3))
plotZOC(divesTDR, dcalib, xlim=xlim1, ylim=c(0, 6))
plotZOC(divesTDR, dcalib, xlim=xlim2, ylim=c(0, 70))
plotZOC(divesTDR, dcalib, xlim=xlim3, ylim=c(0, 70))
par(old.par)

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