Programs for coordinate transformations and adjustments
Coordinate and altitude transformations in Portugal
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Coordinate transformations in Continental Portugal (datum and projection)
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Calculate geoid undulation using the national model GEODPT08
Geodesy and cartography calculations
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Convert geographic coordinates to cartesian geocentric (or inverse)
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Convert geographic coordinates to local geodetic (or inverse)
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Calculate distance and azimuth between two points on the ellipsoid
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Graphic interface for PROJ.4
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2D Adjustments: Affine, affine conformal, projective and higher order polynomials.
Photogrammetry - basic operations
Colinearity equations - Project from ground to image (DIR) or from image to ground (INV)
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Relative orientation of a stereo pair (UNDER DEVELOPMENT)
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Absolute orientation - 3D conformal transformation (7 parameters)
ProjGridTransform
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External site developed by André Pinhal for coordinate transformations. Integrates datum and geoid.