<｜begin▁of▁sentence｜>### Instruction:
As an economist, you are working on analyzing transportation networks within urban areas. You have a dataset containing the edge set [(0, 1), (1, 2), (2, 3), (3, 0)] representing road connections between key locations in a city. You are interested in using the DescartesCoordinateSystem feature provided by the network analysis tool you utilize to visualize and analyze the transportation network, making it easier to interpret the data and forecast future traffic patterns.
### Response:
from igraph import Graph, Plot
import igraph as ig
from igraph.drawing.coord import DescartesCoordinateSystem

# Define a graph with some edges
g = Graph([(0, 1), (1, 2), (2, 3), (3, 0)])

# Create a plot with Descartes Coordinate System
plot = Plot(coordinate_system=DescartesCoordinateSystem())

# Add the graph to the plot
plot.add(g)

# Draw the graph with the Descartes Coordinate System
plot.redraw()

# Save the plot to a file
plot.save('graph_with_descartes_coords.png')
<|EOT|>
