Location of north pole in rotated map
pole = org2pol(origin)
pole = org2pol(origin,
pole = org2pol(origin) returns
the location of the North Pole in terms of the coordinate system after
transformation based on the input
a three-element vector of the form
[latitude longitude orientation],
the coordinates that the new center (origin) had in the untransformed
orientation is the azimuth of the true
North Pole from the new origin point in the transformed system. The
pole is a three-element vector of the form
longitude meridian], which gives the latitude and longitude
point in terms of the original untransformed system of the new location
of the true North Pole. The meridian is the longitude from the original
system upon which the new system is centered.
pole = org2pol(origin, allows
the specification of the angular units of the
units is any valid angle unit. The
When developing transverse or oblique projections, transformed coordinate systems are required. One way to define these systems is to establish the point at which, in terms of the original (untransformed) system, the (transformed) true North Pole will lie.
Perhaps you want to make (30ºN,0º) the new origin. Where does the North Pole end up in terms of the original coordinate system?
pole = org2pol([30 0 0]) pole = 60.0000 0 0
This makes sense: pull a point 30º down to the origin, and the North Pole is pulled down 30º. A little less obvious example is the following:
pole = org2pol([5 40 30]) pole = 59.6245 80.0750 40.0000