<｜begin▁of▁sentence｜>### Instruction:
How do you generate a regular triangular lattice graph with undirected edges using igraph in Python for a given dimension of 4x4, and then plot it with vertex labels?
### Response:
import igraph as ig

# Generate a regular triangular lattice with specified dimensions
dimensions = [4, 4]  # Define the lattice dimensions
tri_lattice = ig.Graph.Triangular_Lattice(dimensions, directed=False, mutual=False)

# Plot the graph
ig.plot(tri_lattice, vertex_label=range(tri_lattice.vcount()))
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