Five31 shows how to select first and last items within a group node in SideFX Houdini.
Starting in and around Houdini 16 or so, using $N left users trying to figure out why the selection method no longer worked. Selections in Houdini changed drastically for the better, so if you are quickly select the first and last primitive, point, vertex or whatever, check out this quick tip by Liam Clisham who covers how this works.
“If you’ve been trying to figure out how to use $N in Houdini without any luck, this video is for you,” Clisham says. The expression ends up being slightly longer but is just as simple to use. Need a little more control? David Kahl showed how you select specific points on geometry using VEX logic within a single Wrangle node.