TRACK_META | R Documentation |
Get meta data in the current track
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.
Don't directly use TRACK_META
. The value of TRACK_META
itself is meaningless. Always use in form of TRACK_META$name
.
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.
# There is no example NULL
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