Survey/Line Coordinate transformations
S-01644
As a Tullow Geophysicist I want to have an API to do transformations from Inline,Crossline coordinates to survey coordinates (source/receiver coordinates) and vice versa so that I don't have to work out the transformation manually from the file or previous knowledge
Pre-Dev Notes: Surveys are conducted in real world coordinates (x/y, usually metres) and other files such as velocity models are in line coordinates. To simplify usage I want an API that does the transformation so I don't have to. In a gridded input file the il/xl & x,y coordinates of the cdp of each trace is specified. These can be used to compute the transformation variables needed.
From Reveal Documentation
For 3D data, the transformation between grid and world coordinates is:
where;
Angle = angle of an inline in degrees counter-clockwise from the X axis) h = handedness of the coordinate system (1 if left-handed, -1 otherwise) (XLINE_0, ILINE_0) = (X origin, Y origin) For a 2D project, the transformation is:
where
Angle = angle of an inline in degrees counter-clockwise from the X axis CMP_0 = (X origin, Y origin)
Implementation Notes:
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Success Criteria:
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CREATED ON - 17/05/2017