I have at hand this already classified image with 8 vegetation classes. Now I would want to change a part of existing vegetation class to a NEW vegetation class, making it 9 classes.
I do not want to reclassify the image as it will take some time. Also, I just needed to change few polygons for the 9th class.
How can I do this?
Is there a way to change the class manually?
I have ENVI 5.2 and ArcMap 10.2.
This is a portion of the original image with 8 classes:
This is a portion of the new 9th class:
This is how I want it to be (In here, as just did an overlay for visualization purposes. Can the CON tool add the new class 9 to the original image?)
When I applied CON, the output was this, which was just the same as the 9th class.
Finally, with help from @MichaelMiles-Stimson, the merging works. A new class 9 was added to an already classified image with 8 classes by doing this in the Raster Calculator: Con(IsNull("rip_raster"),"classif9.dat",9)