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coordsys.convertdirection - Function
1.1.3 Convert the direction coordinate to the specified frame by rotating as
necessary about the reference pixel so the axes line up with the cardinal
directions.
Description
Convert the direction coordinate in the coordinate system to the specified
frame by rotating about the reference pixel so that the resulting coordinate
axes are parallel to the cardinal directions. The resulting coordinate will not
have a conversion layer, even if the input direction coordinate does. A
conversion layer can be set after by running cs.setconversiontype(). Be aware
that if you attach the resulting coordinate system to an image whose pixels
have not been rotated around the reference pixel in the same manner, you will
likely get an image for which the pixels do not match up to world coordinate
values. This method should only be used by experienced users who know what
they are doing. It was written originally to facilitate rotating the direction
coordinate since the implementation of imregrid requires this in certain
circumstances. The conversion is done in place; a new coordinate system tool
is not created. The returned record represents an angular quantity through
which the old direction coordinate was rotated to create the new coordinate.
Arguments
Inputs |
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frame |
| Reference frame to convert to.
| |
| allowed: | string |
|
| Default: |
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record
Example
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