Simone Giannecchini a écrit :
> I have a question though. To best use this factory all I need to do is
> CRS.findMathTransform(sourceCRS, targetCRS, lenient);
>
> each time I need a math transform or it is better if, in case I know I
> ma going to use many transformation over time (GeoServer...) , store a
> BufferedCoordinateOperationFactory object and reuse that one as much
> as possible?
You don't need to use BufferedCoordinateOperationFactory explicitly, it should
be used under the hood automatically in the whole Geotools code base, including
in CRS.findMathTransform(...). However, you may get slightly better performance
as well as a little bit more configurability with the above code:
class MyClass {
private final CoordinateOperationFactory opFactory;
MyClass(Hints hints) {
opFactory = FactoryFinder.getCoordinateOperationFactory(hints);
}
}
Note that the factory returned by FactoryFinder should be an instance of
BufferedCoordinateOperationFactory, unless the user specified explicitly an
other factory. Note also that the hints argument can be null.
Martin.
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