Daikon in place of pasta
I think that someone was pulling your leg. You might be able to turn daikon into long, stiff, strands for decoration, but I don't think that any cooking process will yield something mistakable for pasta.

In fact, the recipe that the OP posted in an answer describes the situation as 'daikon posing as pasta.' The texture is not claimed to be even slightly similar; it's a visual pun.