From d54fe7c1f704a63824c5bfa0ece65245572e9b27 Mon Sep 17 00:00:00 2001 From: Joseph Hunkeler Date: Wed, 4 Mar 2015 21:21:30 -0500 Subject: Initial commit --- src/slalib/sun67.htx/node30.html | 103 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 src/slalib/sun67.htx/node30.html (limited to 'src/slalib/sun67.htx/node30.html') diff --git a/src/slalib/sun67.htx/node30.html b/src/slalib/sun67.htx/node30.html new file mode 100644 index 0000000..21b121e --- /dev/null +++ b/src/slalib/sun67.htx/node30.html @@ -0,0 +1,103 @@ + + + + +SLA_CC2S - Cartesian to Spherical + + + + + + + + + + + + +
+ +next + +up + +previous +
+ Next: SLA_CC62S - Cartesian 6-Vector to Spherical +
+Up: SUBPROGRAM SPECIFICATIONS +
+ Previous: SLA_CALYD - Calendar to Year, Day +

+

+

SLA_CC2S - Cartesian to Spherical +   +

+
+
ACTION: +
Cartesian coordinates to spherical coordinates (single precision). +
CALL: +
CALL sla_CC2S (V, A, B) +

+

+
GIVEN: +
+
+ + + + + +
VR(3)$[\,x,y,z\,]$ vector
+

+
RETURNED: +
+
+ + + + + +
A,BRspherical coordinates in radians
+

+
NOTES: +
+
1. +
The spherical coordinates are longitude (+ve anticlockwise +looking from the +ve latitude pole) and latitude. The +Cartesian coordinates are right handed, with the x-axis + at zero longitude and latitude, and the z-axis at the + +ve latitude pole. +
2. +
If V is null, zero A and B are returned. +
3. +
At either pole, zero A is returned. +
+
+ +next + +up + +previous +
+ Next: SLA_CC62S - Cartesian 6-Vector to Spherical +
+Up: SUBPROGRAM SPECIFICATIONS +
+ Previous: SLA_CALYD - Calendar to Year, Day +

+

+

+SLALIB --- Positional Astronomy Library
Starlink User Note 67
P. T. Wallace
12 October 1999
E-mail:ptw@star.rl.ac.uk +
+ + -- cgit