<｜begin▁of▁sentence｜>### Instruction:
Imagine we're analyzing a dataset that represents connections between various data points. Specifically, we have a sequence dataset that outlines a simple chain of four interconnected nodes — this is akin to a path graph in network theory. I'm interested in visualizing this dataset graphically to better understand its structure. Since a path graph is inherently planar, I’d like us to utilize NetworkX to generate a visual representation of this graph using a layout that maintains its planarity. Could you demonstrate how to accomplish this visualization task with NetworkX, ensuring that the resulting diagram displays the nodes and edges of our path graph without any overlaps or intersections?
### Response:
import matplotlib.pyplot as plt
import networkx as nx

# Create a graph
G = nx.path_graph(4)

# Check if the graph is planar
is_planar, embedding = nx.check_planarity(G)

# If the graph is planar, draw it with a planar layout
if is_planar:
    nx.draw_planar(G)
    plt.show()
else:
    raise nx.NetworkXException('G is not planar')
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