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trajr
packageTraj3DFromCoords
and all functions prefixed with
Traj3D
.TrajAngles
now returns NA
for the angles
before and after zero-length segments. Thanks to Valentin Baumann for
identifying this bug. This change could potential cause problems with
existing code, but such a problem would indicate a problem with the old
analysis. The bug occurred because in base R, Arg(0) == 0
,
which is not correct. Various function that take means of TrajAngles now
remove NA values.TrajFromTrjPoints
to simplify operations
such as removing zero-length segments from a trajectory.TrajDirectionalChange
and
TrajAngles
. The documentation incorrectly stated that the
number of angles returned was number of points - 1. It now states that
the number of angles is number of points - 2 (which is number of
segments - 1).TrajFromCoords
that incorrectly treated NA
values in columns other than coordinates or time as an error.TrajScale
; yScale
was being
ignored.plot.Trajectory
to
avoid passing them to graphics::lines
.simConstantSpeed
to
TrajRediscretize
and Traj3DRediscretize
.check.names
to
TrajsMergeStats
.TrajFromCoords
.TrajInPolygon
, TrajSplit
,
TrajMerge
and TrajSplitAtFirstCrossing
.TrajVelocity
and TrajAcceleration
. The
documentation for TrajDerivatives
has been updated to state
that the acceleration
returned is not really acceleration,
rather it is change in speed over time.diff
to TrajSpeedIntervals
to control how speed is calculated. Default is “backward” so the
function is backwards-compatible, although “central” is usually a better
choice.readcsvFn
to
TrajsBuild
to make it possible to use
readr::read_csv
without a wrapper function.TrajResampleTime
to resample a
trajectory to fixed step times.start.pt.pch
and
start.pt.col
to plotting functions.dt
to TrajTranslate
plot.TrajSpeedIntervals
to handle non-default ylim
values.TrajsMergeStats
.stringsAsFactors = FALSE
to rbind. This prevents incorrect
behaviour and the warning “invalid factor level, NA generated” if one or
more of your statistics are characters.TrajRotate
to allow absolute rotation and
arbitrary origin of rotation.lines.Trajectory
.TrajConvertTime
.plot.TrajSpeedIntervals
was not passing
additional arguments (...
) to plot
.TrajDuration
,
TrajMeanVelocity
, TrajTranslate
.translateToOrigin
parameter to function
TrajsBuild
.These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.