"""Draw an original integration path; Python 3.14, NumPy 2.3.5, Matplotlib 3.10.7.""" from pathlib import Path import matplotlib matplotlib.use("Agg") import matplotlib.pyplot as plt plt.rcParams.update({"font.size": 13, "figure.facecolor": "white"}) fig, ax = plt.subplots(figsize=(6, 4), dpi=120, facecolor="white") ax.plot([0, 2], [0, 0], color="#206895", linewidth=3) ax.plot([2, 2], [0, 1], color="#c16921", linewidth=3) ax.annotate("", (1.25, 0), (0.7, 0), arrowprops={"arrowstyle": "->", "lw": 2.4, "color": "#206895"}) ax.annotate("", (2, 0.72), (2, 0.3), arrowprops={"arrowstyle": "->", "lw": 2.4, "color": "#c16921"}) ax.scatter([0, 2, 2], [0, 0, 1], color="#222222", zorder=4) for xy, label, offset in [((0, 0), "start (0, 0)", (5, 12)), ((2, 0), "(2, 0)", (-55, -25)), ((2, 1), "end (2, 1)", (-100, 10))]: ax.annotate(label, xy, xytext=offset, textcoords="offset points") ax.text(0.8, 0.14, r"$y=0:\ I_1=64$", color="#206895") ax.text(1.2, 0.55, r"$x=2:$" + "\n" + r"$I_2=-4$", color="#a45313") ax.set(xlabel="$x$", ylabel="$y$", xlim=(-0.3, 2.5), ylim=(-0.35, 1.35), title="Oriented path for the line integral", xticks=[0, 1, 2], yticks=[0, 0.5, 1]) ax.grid(alpha=0.15) ax.set_aspect("equal") fig.tight_layout() fig.savefig(Path.cwd() / Path(__file__).with_suffix(".png").name, facecolor="white", transparent=False) plt.close(fig)