Hi all,

I'm trying to do a land cover classification by means of K-means clustering, based on Landsat 5 TM imagery. I first convert the DN values to reflectance with the Band Arithmetic tool. However, that's where the problems start. I can only create virtual files with the Band Arithmetic, because if I try to write the data, the Tool doesn't execute after clicking OK, nothing happens. When I do the K-means clustering afterwards, all the bands that I created in the meanwhile, such as the original bands, the radiance and the reflectance bands, are in the same product. Apparently, I cannot choose the input bands for the K-means clustering, although the reflectance bands are the only ones I want to use as input. I therefore put those into a new product. However, I can't execute the K-means clustering with this product, since it refers to the previously made virtual products. Even if I save the new product to BEAM-DIMAP format, I get an error with the K-means clustering. Is there any way around this problem, for example by selecting the right input bands?

Thanks,
Annekatrien