![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiOo-c5VEjgiEotyHF6lW5V5FkoRU0p2Pkmo6HKaE0MXdJMfy7uqpxo2aLH3w5jgCAMGWwCtoWFPz7FdEjk7CVkOwyLdHjXUSS33n88aggUXPimEPBTfQT5EM-FTc3Y_cCi1EaQMUXBPiE/s320/cc_C2M_2sub.png)
extremely useful. However, we can convert the Z-values into a height above the ground as way to add another layer of data so that we can measure things like average tree heights, examine building heights., or (one thing I do a lot) filter the points to so that we only see points in a specific height range above the ground. This last application is what we'll be covered here and it's really useful to examine river channels below dense vegetation.