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44 lines
2.4 KiB
44 lines
2.4 KiB
import matplotlib.pyplot as plt
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import numpy as np
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import json
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with open("ecar.json", "r") as rf:
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settings = json.load(rf)
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kilometer_price = np.array( [settings["ecar"]["kwh_per_kilometer"] * settings["kwh_price_home"],
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settings["ccar"]["litre_per_kilometer"] * settings["petrol_litre_price"]])
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labels = [settings["ecar"]["label"], settings["ccar"]["label"]]
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price = np.array([settings["ecar"]["price"], settings["ccar"]["price"]])
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taxes = np.array([settings["ecar"]["taxes"], settings["ccar"]["taxes"]])
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insurance = np.array([settings["ecar"]["insurance"], settings["ccar"]["insurance"]])
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kilometer_price_ecar = (settings["ecar"]["charging_behaviour"]["percent_home_charges"] * settings["kwh_price_home"]
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+ settings["ecar"]["charging_behaviour"]["percent_commercial_charges"] * settings["kwh_price_commercial"]) / 100.0
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driving = np.array([kilometer_price_ecar * settings["kilometers_per_year"], kilometer_price[1] * settings["kilometers_per_year"]])
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maintenance = np.array([settings["ecar"]["maintenance"], settings["ecar"]["maintenance"]])
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width = 0.3
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fig, ax = plt.subplots()
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ax.bar(labels, price, width, label = "Price", color = "gray")
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currenty = price
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y = 0
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for i in range(settings["years"]):
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#while currenty[0] > currenty[1]:
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ax.bar(labels, taxes, width, bottom = currenty, label = "Taxes".format(y), color = "darkgreen")
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currenty = currenty + taxes
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ax.bar(labels, insurance, width, bottom = currenty, label = "Insurance".format(y), color = "royalblue")
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currenty = currenty + insurance
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ax.bar(labels, driving, width, bottom = currenty, label = "Driving".format(y), color = "midnightblue")
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currenty = currenty + driving
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ax.bar(labels, maintenance, width, bottom = currenty, label = "Maintenance".format(y), color = "lavender")
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currenty = currenty + maintenance
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y += 1
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ecar_top = currenty[0]
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#ax.plot(np.linspace(-0.2, 1.2, 10), [ecar_top]*10, "--", color = "firebrick", label = "Break even")
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ax.text(0.3, ecar_top * 0.95, "Break even: {} years, {} kilometers".format(y, y*settings["kilometers_per_year"]))
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ax.set_ylabel("CHF")
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ax.set_title("Comparision of economics electric vs. combustion car")
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ax.legend(["Price", "Taxes", "Insurance", "Driving", "Maintenance"])
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ax.grid(axis = "y")
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print("Break even after {} years and {} kilometers. {}, {}".format(y, y*settings["kilometers_per_year"], currenty[0], currenty[1]))
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plt.show()
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