 Hello, in this video we are going to apply map algebra with boolean rusters to identify the pixels that are true for all the rusters. Therefore we will use the end operator. Go to Raster, Raster Calculator and then add the layers, the boolean layers that you want to check if they are true or false. So the distance from the houses, 150 meter from houses, need to be true. Then we click on End to add the end operator. The distance to roads, 150 meter from roads, need to be true. And then we add the industry. It needs to be further than 300 meter from industry and the wells need to be not deep. If all the raster layers have true, then the results will be true. All other combinations will result in false. Call the result layer accessible wells. When I run it, I get this raster layer, which I can style as a boolean raster with pelleted unique values and I can edit the labels. So in this video you've learned how to apply map algebra on boolean layers using the end operator.