Raster Classified Values Not The Same As Stretched Values, Why?

Question

In my ArcMap project I have a grid. When displaying the grid with stretched values I see a range of 0 to (almost)1 like I would expect. See the first image below.  I can use the identify tool to select pixels in the grid and the identify returns values from 0 to (almost) 1 as expected.

If I try to classify these data I am only allowed to classify values from 0 to 0.47 (see the second image below).

Why is there a difference between the stretched range and the classified range?

ArcGIS 10.1.2

AnnaScholl · Answer

probably because the max value is rounded. 0.9990011 is almost 1.

GerryGabrisch · Answer

Dan,

Thanks for the reply.  I am not trying to change the underlying data, just symbolize it in a different. In the grid layer properties I can see that the min and max values are between 0 and 1.  My question is, when I try to symbolize those data by classes I see a different range of values.  Why?

DanPatterson_Retired · Answer

Stretching the raster symbology doesn't change the underlying data, it simply is a visualization thing.   If you want to produce a raster with new values to reflect this, you are going to have to decide upon the type of raster reclassification you want to use.