 Hello, in this video we're going to create boolean rusters. We will use this buildGruster which has six classes and we want to have a new ruster with true for the house class and false for all the other classes. So we need to indicate that values one in the original will be true and the rest will be false. We go to the ruster calculator and we double click on buildG on the equal sign and then we type one which means if buildG equals one it's true otherwise we turn false. I save this to houses.tiff and here's the result, move it to the top and I'm going to style it. The boolean rusters are styled with the palleted unique values render and here we see it has two values zero and one and I can change the color for false to red and for true to green. I can label them red with no houses and one with houses. Now let's repeat this for the road slave. I move it to the top and we see the three classes and I want a boolean ruster with roads and no roads so I need the classes that are larger than zero to be true and the class with zero to be false. I save it to a new layer isroad.tiff and I click OK. Move the layer to the top to see it and I'm going to style it with the palleted unique values which is appropriate for boolean and discrete rusters and change the colors false red and true green and I change the labels no road and road. So in this video you've learned how to use the ruster calculator to create boolean rusters from discrete rusters.