Is there a way to quantize position of instances in space using nodes? I don't want to use array for this project. I should construct a virtual 3d grid of given measure and make instances positioning (offset) themeselves on this grid.
I have not tried, but if you have Base Position it's raw position before quantization.
Then you pass it to Quantize, and 2nd Const Scalar Steps, output from it is quantized.
Now you should convert it to Offset, if I am not mistaken..
Subtract Base Position from Quantized output (or reverse), should give offset.