How to make a heightmap in unity?

Question

Unity

I have about 40 million points to build a plane and the shape is roughly a rectangle. But unity only allows you to make max 4096x4096 Is there another way to make a height map? or use non-terrain, what if he fails?
terrainData.SetHeights(0,0, heights);

Answer 1

https://docs.unity3d.com/Manual/terrain-CreateNeig...
a modern version of the unity and these are adjacent tiles for terrains.
In one to shove such a resolution - it simply does not make sense. then there will be only problems with optimization, therefore they didn’t even bother with a height map of more than 16 million points. (4k resolution).
dynamic loading, transitions between locations. who needs problems with friezes and subplots, or a flight from memory.