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Opened 21 years ago

Closed 21 years ago

Last modified 21 years ago

#244 closed defect (duplicate)

psSphereTransformICRSToEcliptic()

Reported by: gusciora@… Owned by: Paul Price
Priority: high Milestone:
Component: PSLib ADD Version: unspecified
Severity: normal Keywords:
Cc:

Description

Please specify the appropiate values for alphaP, deltaP, phiP.

Change History (5)

comment:1 by Paul Price, 21 years ago

Resolution: duplicate
Status: newclosed

* This bug has been marked as a duplicate of 245 *

comment:2 by gusciora@…, 21 years ago

I don't think it's a duplicate.

If I can switch alphaP and phiP, then psSphereTransformICRSToEcliptic() is
exactly the same as psSphereTransformEcliptictoICRS() since alphaP and phiP are
0.0. Is that true?

comment:3 by Paul Price, 21 years ago

Oh, I neglected to mention that the sign of delta_p is switched.

It works on my prototype.

comment:4 by gusciora@…, 21 years ago

Okay, I'll switch alphaP and phiP and I'll switch the sign of deltaP.

I really think we have to include this type of information in the ADD. Email,
bug reports, and personal conversation are certainly helpful, but they tend to
be forgotten months later when one tries to modify the code.

This actually happened this past week when I was changing the names of the
psSPhereTransform members. I could not find any documentation for the
algorithms I had coded in the current version of psCoord.c.

comment:5 by Paul Price, 21 years ago

Note that the specification for this function has changed.

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