Converting degree into degree latitude

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Guest

Dear Users,

Is there a way to convert any given degree into degree latitude? The range
for latitude is from -90 to +90.
E.g.#1 Given a -120 degree, its degree latitude would be +60 degree latitude.
E.g.#2 Given a +120 degree, its degree latitude would be -60 degree latitude.

What would be the formula that could be used to for such conversion?

Kind Regards
Charles
 
Hi Charles,

Would something like this work:

If degree < 0 then
degree latitude = degree + 180
elseif degree > 0 then
degree latitude = degree - 180
else ' degree = 0
what here?
end if

HTH -Linda
 
I think this is close but my brain is nearly burned out from trying to fit
your reckoning into a progressive circle.

Function latitude(i)
s = Sgn(i) * -1
i = Abs(i)
a = i \ 90
Select Case Abs(a) Mod 2
Case 0
latitude = i Mod 90 - (90 * Abs(a) Mod 2) * s
Case 1
latitude = (90 - i Mod 90 - (90 * Abs(a) Mod 2)) * s
End Select
End Function

I dont understand your reckoning either
if the equator is 0 and you proceed 120 positive degrees I figure you will
be at +60 degrees ... that is still in the northern hemisphere????


peter walker mvp
 
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