Filter Point Cloud for given X,Y or Z value range in Cloudcompare

Suppose we have to select and delete point at specific elevation:

• First Convert the (Z) coordinates to a scalar field with 'Edit > Scalar fields > Export coordinate(s) to SF. 

• Then use the 'Edit > Scalar fields > Filter by value' to filter the points with specific scalar values (the Z coordinate here) falling in a specific range.