Mask vegetation and water in your imagery

After creating a Vegetation mask and a Water mask, you can combine them into a single mask using the Merge layers tool and the Raster calculator. This layer can then be applied to mask out vegetation and water in other layers using the Apply a mask tool.

Create your masks.

Merge the two layers into a single multiband layer, so you can use the processing tools on the combined set of bands.

Now you will have a new layer that contains two bands - one containing the water mask and one containing the vegetation mask. You can visualize either band as a single band image by adjusting the settings of the layer.

To combine the two bands into a single mask layer, select the newly created layer in the Raster calculator and create an expression that combines the two mask bands into a single layer. You'll want to select pixels where either the vegetation mask band or the water mask band is True: (("veg" == 1) or ("water" == 1))

Now you can apply the mask to another layer using Apply a mask, or use the classification mask for your analysis.