Specifications
224 Z-Family Technical Reference Manual
Values are derived from tables which can be obtained from various sources, including NGS
Publication 62-4 (1986 Reprint) which also includes discussion and definitions of applied formulas
and parameters.
Table 6.159: UDG Structure for Lambert Conic Conformal for SPC27
Description Range Name
Map projection type. LC27
Number of parameters for the selected projection 11
False Easting or x coordinate of central meridian L1
Longitude of Central meridian L2
Map radius of central parallel (
Φο)
L3
Map radius of lowest parallel of the projection table plus y value on
central meridian at this parallel (y = 0 in most cases)
L4
Scale (m) of the projection along the central parallel (
Φ
o
)
L5
Sine of latitude of central parallel (
Φ
o
)
computed from basic
equations for Lambert projection with 2 standrad parallel.
L6
Degree, minute portion of the rectifying latitude
ω
o
for
Φ
o, latitude
of origin
L7
Remainder of
ω
oL8
1/6 * Ro * No * 10^6 L9
tan
Φ
o / 24 * (Ro * No)^3/2] * 10^24 L10
[(5 + 3 * tan^2
Φ
o)/120 * Ro * N0^3] * 10^32 L11
Number of parameters for the selected projection 11