Qihuanye
88 lines
2.3 KiB
Python
88 lines
2.3 KiB
Python
import os
|
|
from pathlib import Path
|
|
import sys
|
|
|
|
os.environ.setdefault("MPLCONFIGDIR", "/tmp/matplotlib")
|
|
|
|
import matplotlib.pyplot as plt
|
|
import numpy as np
|
|
from matplotlib.ticker import AutoMinorLocator
|
|
|
|
FONT_NAME = "LXGW WenKai"
|
|
BG_COLOR = "white"
|
|
GRID_MAJOR = "#111111"
|
|
GRID_MINOR = "#8a8a8a"
|
|
LINE_COLOR = "#111111"
|
|
POINT_COLOR = "#111111"
|
|
|
|
CURRENT_MA = np.array([11.30, 12.71, 13.82, 15.47, 16.66], dtype=float)
|
|
VOLTAGE_V = np.array([11.39, 10.69, 9.97, 9.21, 8.58], dtype=float)
|
|
|
|
DEFAULT_OUTPUT = (
|
|
Path(__file__).resolve().parent.parent
|
|
/ "image"
|
|
/ "exp4"
|
|
/ "vi_characteristic_curve_exp4.svg"
|
|
)
|
|
|
|
|
|
def draw_curve(save_path=DEFAULT_OUTPUT):
|
|
save_path = Path(save_path)
|
|
save_path.parent.mkdir(parents=True, exist_ok=True)
|
|
|
|
plt.rcParams["font.family"] = FONT_NAME
|
|
plt.rcParams["axes.unicode_minus"] = False
|
|
|
|
slope, intercept = np.polyfit(CURRENT_MA, VOLTAGE_V, 1)
|
|
fit_x = np.linspace(CURRENT_MA.min() - 0.4, CURRENT_MA.max() + 0.4, 200)
|
|
fit_y = slope * fit_x + intercept
|
|
|
|
fig, ax = plt.subplots(figsize=(8.2, 6.0), dpi=160)
|
|
fig.patch.set_facecolor(BG_COLOR)
|
|
ax.set_facecolor(BG_COLOR)
|
|
|
|
ax.plot(
|
|
fit_x,
|
|
fit_y,
|
|
color=LINE_COLOR,
|
|
linewidth=2.2,
|
|
zorder=2,
|
|
)
|
|
ax.scatter(
|
|
CURRENT_MA,
|
|
VOLTAGE_V,
|
|
s=60,
|
|
color=POINT_COLOR,
|
|
edgecolors="white",
|
|
linewidths=0.8,
|
|
zorder=3,
|
|
)
|
|
|
|
ax.set_xlabel("端口电流 I / mA", fontsize=13)
|
|
ax.set_ylabel("端口电压 U / V", fontsize=13)
|
|
|
|
ax.set_xlim(11.0, 17.1)
|
|
ax.set_ylim(8.5, 11.5)
|
|
ax.set_xticks(np.arange(11, 18, 1))
|
|
ax.set_yticks(np.arange(8.5, 11.6, 0.5))
|
|
ax.xaxis.set_minor_locator(AutoMinorLocator(2))
|
|
ax.yaxis.set_minor_locator(AutoMinorLocator(2))
|
|
ax.set_box_aspect(6 / 5)
|
|
|
|
ax.grid(True, which="major", color=GRID_MAJOR, linewidth=0.95, alpha=0.9)
|
|
ax.grid(True, which="minor", color=GRID_MINOR, linewidth=0.55, alpha=0.8)
|
|
|
|
for spine in ax.spines.values():
|
|
spine.set_linewidth(1.0)
|
|
spine.set_color("#111111")
|
|
|
|
fig.tight_layout()
|
|
fig.savefig(save_path, bbox_inches="tight")
|
|
plt.close(fig)
|
|
print(f"saved to: {save_path}")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
output_path = sys.argv[1] if len(sys.argv) > 1 else DEFAULT_OUTPUT
|
|
draw_curve(output_path)
|