mirror of https://github.com/flysand7/ciabatta.git
48 lines
1.0 KiB
Python
48 lines
1.0 KiB
Python
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import matplotlib.pyplot as plt
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import numpy as np
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import subprocess;
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import math;
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import csv;
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plt.style.use('_mpl-gallery')
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pi=math.pi
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with open('bin/data.csv', newline='') as csvfile:
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reader = csv.reader(csvfile, delimiter=' ', quotechar='|')
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rows = [row for row in reader];
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# make data
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x = [float.fromhex(xi[:-1]) for xi in rows[0][:-1]]
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y = [float.fromhex(yi[:-1]) for yi in rows[1][:-1]]
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yex = [math.asin(x0) for x0 in x]
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err = np.subtract(y, yex);
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maxerrv = max(err)
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minerrv = min(err)
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maxerr = [maxerrv for xi in rows[0][:-1]]
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minerr = [minerrv for xi in rows[0][:-1]]
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errscale = 10**-14
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lo = x[0]
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hi = x[-1]
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fig, a = plt.subplots(2, 1, constrained_layout=True)
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# a.step(x, y, linewidth=1)
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a[0].set_xlim(lo, hi);
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# a[0].set_ylim(-1.000001, 1.000001);
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a[0].set_xlabel('x');
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a[0].set_ylabel('f(x)');
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a[0].plot(x, y, x, yex)
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a[1].set_xlim(lo, hi);
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a[1].ticklabel_format(useOffset=False)
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a[1].set_ylim(-errscale, errscale);
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a[1].set_xlabel('x');
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a[1].set_ylabel('absolute error');
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a[1].plot(x, err, x, maxerr, x, minerr);
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plt.show()
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