How to combine two rasters into one layer?

Question

I need to combine two raster layers into one. Layer A has soil information for the entire state, but contains gaps. Layer B contains soil information for Layer A's gaps. What's a simple way to combine these two rasters into one "seamless" layer? Both layers have the same four values (1 - 4) and are the same pixel size, type, etc.

I don't want to create a mosaic dataset, I want one actual layer.

Answer 1

Use Raster calculator to solve this issue. It's pretty simple to use.

In this case, Con() evaluator is a good approach. It has this form:

Con(in_conditional_raster, true_raster, {false_raster})

So, in your case will be something like:

Con("Layer A - Band_1" > 0, "Layer A - Band_1", "Layer B - Band_1")