I'm trying to do an image classification. I created a polygon with 5 different classes (identified in the Id column; 1-5). I then created a signature file (which took about an hour to complete). When I did the maximum likelihood classification using that sig file, it gave me an immediate error saying there are fewer than 1 class.
I set the data frame to Canada Lambert Conformal Conic. I added the scanned paper map. Added a townships shapefile. Georeferenced it using about 6 control points. Created new shapefile in ArcCatalog using Canada lambert conformal conic as the CRS. Created 3 polygons for each class, differentiating them using 1,2,3,4 or 5 in Id column. Created signature in same folder as other data. Performed MLC using that sig file but it immediately gave me that error.
How do I fix this?