Thanks Mark,
If I get the idea I should get the pixel coordinates from the new Image
once the user has resized and placed it in the correct spot and then use
AffineTransform to re-calculate the world coordinates.
But how can I make the image in the mapLayer movable and resizable? My
problem is that I still have not understood how to do that....
Anna.
2016-04-26 22:03 GMT+02:00 Mark Prins <[email protected]>:
>
> Op 26 apr. 2016 12:22 schreef "Anna Amat" <[email protected]>:
> >
> >
> > Dear all,
> >
> > I'm writing an application using geotools. I would like the user to be
> able to upload a raster image (that initially has no spatial information)
> and georeference it using an existing map.
> >
> > I can think about 2 possibilities:
> > 1) georeference initially the image to the center of the map and
> allowing the user to resize and move it
> > 2) Using reference points in both the map and the image and then fitting
> the selected points
> >
>
> If the image is close to the maps projection 1 may be good enough, 2 will
> make it possible to do warping/reproduction.
> There's a tutorial on affine transform:
> http://docs.geotools.org/stable/userguide/tutorial/affinetransform.html
>
> Mark
>
>
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