Geometrical interval classification

Question

I've tried to reclassify a raster map (floating) using geometrical interval. I've tried two ways: the first one using the Reclassify tool and the second one using the classification window in Properties->Symbology. The results are sometimes fairly different.

Does someone know the reason?

Thank you.

StefaniaStevenazzi · Answer

With the mask I've obtained the result in the examples above (with two different classifications using the two methods), while whithout the mask I've obtained the same classification (that is the same break values) using the two methods. Without the mask the break values are the same obtained with Reclass tool in the case with the mask (example n. 1).

This means that the mask has some influence on the classification.

DanPatterson_Retired · Answer

Not sure if that means that the mask is the cause of the problem or not or you get the same results with or without the mask?

StefaniaStevenazzi · Answer

I've tried as you suggest. Indeed the two classifications are the same. Thanks for the advice.

I've also read the post that you suggest.