I have an image 03.img and I want to apply Sub pixel classification on it. Since the image is rather big, I first clipped it with an AOI file (converted from a shape file). Next I applied Preprocessing and Environmental Correction on the clipped image 03clip.img. Then I selected an new AOI in 03clip as Input training set file for Manual Signature Derivation. But ERDAS kept telling me that
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Image and Aoi files have different map info. Aborting...
What could be the problem? How could I solve it?
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