Hi, Here is what my job looked like first: I wanted to obtain this, a clean and straight edge: The original orthophotos were smaller (50 x 50) and I wanted bigger ones (100 x 100). I wanted my grid to start at a specific point ( a rounded value every 100 meters). I tried to change the transparency of the presentation background in the view options,but it didn't work. So I: - I create a tiff I call background.tiff in the raster manager/edit/merge, at the coordinates I want. It's nothing more than a picture of the background. - attach all my rasters - I create a clip to obtain the contour I need. That cuts and hides all the part of the rasters I don't need. - attach my background tiff, put it in the back, with a transparency at 100%. - raster manager/edit/merge, I create my news rasters. - And that's it.
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