I am overlaying a TIFF image onto the World Topographic Map that I downloaded from ESRI ArcGIS Online.
Now, using Photoshop I have already removed the white background in the original TIFF image. (This was a quick and easy thing to do using the magic-wand tool.) Thus, the TIFF file contains only black showing a map outline, symbols, and words.
The problem is that when I add this TIFF file to my map in ArcGIS a white background shows up again. Is there a way to make that white background disappear?
Thank you very much.