I am new to using these files and want to clip one using a polygon. I thought the Extract LAS tool in 3D analyst would accomplish this. When I try it, the tool gives no indication of an error and I obtain output, but the extent of the output .las file is the same as that of the input file. Neither of them will draw on the screen, but I assume that is because of the huge number of data points. I am using version 10.6 of ArcMap. The input file has been classified. Would that make a difference? I assume I am overlooking something simple but just can't spot it. Thank you.