The Classified raster layer method displays thematic rasters by grouping cell values into classes. Use this type of thematic classification on continuous phenomena, such as elevation, slope, distance, or suitability.But, the histogram of
image which already classified is not continuous data because the value in histogra
the class numbers that are difference between the original data and the output data.
Thus,this image classification isn't the continuous data.
In case of original image, the value in histogram is continuous number because it is
raw data which keep inside the image when satellite got the data.