Subset.TRACK_META.Rd
Get meta data in the current track
# S3 method for TRACK_META
$(x, name)
Always use TRACK_META
.
Name of the meta name. For all supported names, type names(TRACK_META)
.
The variable TRACK_META
can only be used to get meta data from the "current" track. If the current track
is not the one you want, you can first use set_current_track
to set the current track.
There are following meta data for the current track:
xlim
:Data range on x-axis.
xmin
:xlim[1]
.
xmax
:xlim[2]
.
xrange
:xlim[2] - xlim[1]
.
xcenter
:mean(xlim)
.
theta_lim
:Range of the angles on the spiral, measured in radians.
theta_min
:theta_lim[1]
.
theta_max
:theta_lim[2]
.
theta_range
:theta_lim[2] - theta_lim[1]
.
theta_center
:mean(theta_lim)
.
ylim
:Data range on y-axis.
ymin
:ylim[1]
.
ymax
:ylim[2]
.
yrange
:ylim[2] - ylim[1]
.
ycenter
:mean(ylim)
.
rel_height
:Fraction of height of the track to the distance between two neighbouring loops.
abs_height
:The height of the track, which is rel_height
multiplied by the distance between two neighbouring loops.
track_index
:Current track index.
The corresponding value.
# There is no example
NULL
#> NULL