How can I remove small polygons from a raster data set? I know that they aren't technically polygons, but I convert the rasters to polygons. The problem is that I want to focus on a specific polygon that is large and there are many small polygons surrounding it. I want the small polygons out. Can anyone help me with this?
You can simply add a new field named area with type double, then right-click the field name, go to calculate geometry. In the property field, select area and choose meter square as units. Then go to Select by Attribute and select the areas that is more than the threshold area and save the selected polygons into a new shapefile.