python - 5つのグラフの「平均」グラフをプロットする

Question

次の図のように、5つの異なるグラフを定義するデータポイントがあるとします。

y軸の値に対してこれらの平均グラフを描画するにはどうすればよいですか？
異なるグラフのデータポイントがx軸上で同じ値を持っていないため、直接それを行うことはできません。

Answer 1

import numpy as np

def line_tuple(filename,cols=(0,1)):
    return np.loadtxt(filename,usecols=cols,unpack=True)

#parse each line from the datafile into a tuple of the form (xvals,yvals)
#store that tuple in a list.
data = [line_tuple(fname) for fname in ("line1.txt","line2.txt","line3.txt","line4.txt","line5.txt")]

#This is the minimum and maximum from all the datapoints.
xmin = min(line[0].min() for line in data)
xmax = max(line[0].max() for line in data)

#100 points evenly spaced along the x axis
x_points = np.linspace(xmin,xmax,100)

#interpolate your values to the evenly spaced points.
interpolated = [np.interp(x_points,d[0],d[1]) for d in data]

#Now do the averaging.
averages = [np.average(x) for x in zip(*interpolated)]

#put the average value along with it's x point into a file.
with open('outfile','w') as fout:
    for x,avg in zip(x_points,averages):
        fout.write('{0} {1}\n'.format(x,avg))

そして今、私はそれをプロットします：

plot 'line1.txt' w l, \
     'line2.txt' w l, \
     'line3.txt' w l, \
     'line4.txt' w l, \
     'line5.txt' w l, \
     'outfile' w l