Sorry, i think i have not explained properly. The steps should be:
- Open every image/band in SNAP: File->Open Product… At the end of the process you will have 3 products in the product explorer.
- Raster->Band Maths… : select as target product the first one for example and in “Edit expression” you choose the band of other product
At the end of this process you should have two of the three bands in the first product.
- Repeat the step 2 to add the other band to product[1]
- Right-click on product[1] -> Open RGB Image Window and choose the red, green and blue bands.
