Hi - you can use the lidR package in R to go directly from a bunch of .laz files to an elevation matrix:

# load lidar elevation data
ctg <- lidR::readLAScatalog("/path/to/your/laz_data/")
las <- lidR::readLAS(ctg, select = "xyz")
dem <- lidR::grid_canopy(las, res = 1, p2r())

Cardiff?

yep, using the rayshader package in R by @tylermorganwall.bsky.social

Just encountered this too, that 50MB limit is a little annoying!

Lucky you, I'd love to see the race village and the start!

Yes please!

That is wonderful, Julian

Thank you! I've made a few of these lighthouse maps over the years, I'll post them over the next couple of weeks

Thank you, it's nice to be back, looking forward to making some new work!

Thanks, Terence, not sure I would have embarked upon it if I'd known how much work would be involved 😂