Sorry for the unprecise question. My underlying question is which pixels of a grid are "inside" a polygon (ROI).
Therefor I want to derive points from the pixels and afterwards check which points the polygon contains. The latter can easily be done by JTS: polygon.contains(Point). But I need the geographic coordinates of every pixel to create a point for the operation. Furthermore, for reasons of performance, it would be great to check only pixels lying in the bounding box of the polygon. My problems are the following: 1. How do I get the geographic coordinates of any pixel in the grid? I want to use JAI RectIter or RandomIter, thus the coordinates should be derived iteratively. 2. How can this be done for a "sub-grid" defined by the polygon's bounding box? Do I have to clip the grid and process the operation describet above? Or can the clipping be done somehow "on-th-fly", without creating a sub-grid? I hope I could make my intension clear now. Christian ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
