lidar - LAS dataset to raster with ground points only

I'm trying to make a raster from an LAS dataset. I want to only use points classified as ground, but I can't figure out how to do this. What I've tried is:

• Create LAS dataset from 2 .las files.


• Filter dataset on ground using LAS Dataset to raster tool.


• Pick the dataset and use linear interpolation on average cell assignment type.

The result is a raster with all points including non-ground points.

When I'm in the LAS Dataset to raster tool I'm choosing an external file that doesn't get affected from what I've done in the LAS Dataset toolbar. How do I make the filter affect the dataset before turning it into a raster?

Answer

After some research I figured out a way to solve this, much thanks to HavardMoe's input.

Here is how I did it:

• Used the LAS to Multipoint tool, this is the step where the filtering occurs by choosing specific input class codes and/or specific returns.


• Then I used one of the interpolation tools listed here.

That gave me the interpolated raster I was looking for.