... So our questions are:
1. Given the input and output coordinate systems, is there a way to construct a transformation that would convert data points from the input coordinate system to the output coordinate system, without knowing the datum shift or transformation by name? Both the input and output can be either geographic or projected coordinate system.
2. Assuming the answer to question 1 is yes. For a given pair of input and output coordinate systems, there might exist multiple sets of transformations, some may be direct, some may go through an intermediate like WGS84. Can we easily filter the transformation by some criteria, like the method (e.g. 7-parameter PVR, Molodensky), error, etc?
3. Are there some sample codes available?
Our application is Java based, so ideally we would like something in Java.
That's very good news. Thank you.
In the case when there is no direct datum shift (transformation) available for the input/output coordinate systems specified, will the upcoming 10.1 provide a funtion to construct something going through an intermediate (e.g. WGS84)?
BTW, when will 10.1 be released? Can we get a pre-release version?