current_spiral | R Documentation |
Get current spiral object
current_spiral()
The returned value is an object of spiral
reference class. The following methods might be useful:
$curve()
:It returns the radius for given angles (in radians).
$spiral_length()
:It returns the length of the spiral (from the origin) for a given angle (in radians), thus if you want to get the length of a spiral segment, it will be spiral$spiral_length(theta2) - spiral$spiral_length(theta1)
where spiral
is the spiral object.
Also there are the following meta-data for the current spiral (assume the object is named s
):
s$xlim
:Data range.
s$xrange
:s$xlim[2] - s$xlim[1]
s$theta_lim
:The corresponding range of theta
s$theta_range
:s$theta_lim[2] - s$theta_lim[1]
s$spiral_length_lim
:The corresponding range of spiral length
s$spiral_length_range
:s$spiral_length_lim[2] - s$spiral_length_lim[1]
s$max_radius
:Radius at s$theta_lim[2]
A spiral
object.
spiral_initialize() s = current_spiral() s$curve(2*pi*2) s$spiral_length(2*pi*2)
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