The ‘Mask numeric data’ component is listed under ‘Arithmetic’.

This component takes a spatial boolean input (i.e. land cover classification map) and uses it to mask a spatial numeric dataset input.

Click and drag the output from the ‘No vegetation’ union component to the mask node of the mask component.

Now we need to add a constant to use as the numeric input.

Simply specify the constant by entering a number in its text input box.

Enter 0.001, name it and connect it to the mask component as shown.

Save and run the model to make sure it is working properly.