code: def _meshgrid(vecx, vecy):
      gridx = vecx.repeat(len(vecy), 1)
      gridy = vecy.repeat(len(vecx), 1).t()
      return torch.stack([gridx, gridy])
  
imports: import math
  import torch
  import torch.nn
  import torch.nn.functional
  from torch.nn.modules.utils import _quadruple
  from .base import Processor
label_desc: Use image node_id 4 for calling a global function with example usage: _meshgrid(vecx, vecy) and returns: torch