Coo

Coo

new Coo(longitude, latitude, prec)

Description:
  • Represents a Coo with configurable parsing options.
Source:
Parameters:
Name Type Description
longitude number longitude (decimal degrees)
latitude number latitude (decimal degrees)
prec number precision for `format` method (8: 1/1000th sec, 7: 1/100th sec, 6: 1/10th sec, 5: sec, 4: 1/10th min, 3: min, 2: 1/10th deg, 1: deg

Methods

dist2(pos)

Description:
  • Squared distance between 2 points (= 4.sin2(r/2))
Source:
Parameters:
Name Type Description
pos Coo another position on the sphere
Returns:
||pos-this||2 = 4.sin2(r/2)

distance(pos)

Description:
  • Distance between 2 points on the sphere.
Source:
Parameters:
Name Type Description
pos Coo another position on the sphere
Returns:
distance in degrees in range [0, 180]

equals(coo)

Description:
  • Test equality of Coo.
Source:
Parameters:
Name Type Description
coo Coo Second coordinate to compare with
Returns:
True if the two coordinates are equal

format(options)

Description:
  • Format coordinates according to the options. Decimal and sexagesimal will use the `precision` value that the `Coo` was created with.
Source:
Parameters:
Name Type Description
options 'd' | 's' | '/' | '2' 'd': decimal, 's': sexagésimal, '/': space separated, '2': return [ra,dec] in an array
Returns:
the formatted coordinates

parse(str)

Description:
  • parse a coordinate string. The coordinates can be in decimal or sexagesimal
Source:
Parameters:
Name Type Description
str string string to parse
Returns:
true if the parsing succeded, false otherwise