38 lines
957 B
Python
38 lines
957 B
Python
import json
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import numpy as np
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import matplotlib.pyplot as plt
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colorList = json.load(open('color/config.json','r'))["color"]
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import csv
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with open('data/passenger.csv', 'r') as f:
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reader = csv.reader(f)
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header = next(reader)
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data = [row for row in reader]
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data = np.array(data).astype(int).T
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xList = data[1]
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yList = data[2]
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plt.scatter(xList,yList,color=colorList[0])
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from scipy.optimize import curve_fit
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def quadratic(x,a,b,c):
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return a*x*x+b*x+c
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vala,valb,valc = curve_fit(quadratic,xList,yList)[0]
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residuals = yList - quadratic(xList,vala,valb,valc)
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ss_res = np.sum(residuals**2)
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ss_tot = np.sum((yList-np.mean(yList))**2)
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r_squared = 1 - (ss_res / ss_tot)
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print("R-squared:", r_squared)
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plt.plot(np.arange(0,80000,1000),quadratic(np.arange(0,80000,1000),vala,valb,valc),color=colorList[1])
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plt.xlabel('Ferry Passenger Count (Number of Passengers)')
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plt.ylabel('Hotel & Motel Gross Business Sales (USD)')
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plt.legend()
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plt.show()
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