sinegraph.py

import matplotlib.pyplot as plt
import numpy as np
from pandas import DataFrame
from datetime import datetime, timedelta

def draw(plotdict):
    df = DataFrame(plotdict)
    fig, ax = plt.subplots()
    ax.set_ylim([-1,1])
    #fig.subplots_adjust(left=0.10, bottom=0.17, right=0.80, top=0.96, wspace=0, hspace=0)
    for key in plotdict.keys():
        if key != "dates":
            df.plot.line(x="dates", y=key, ax=ax)
    plt.grid(b=True, which="major", axis="both")
    plt.figure(figsize=(5,3), dpi=60)
    for tick in ax.xaxis.get_major_ticks():
        tick.label.set_fontsize(8)
        tick.label.set_rotation(45)
    plt.show()

def create_plots(): ##this is just to generate some sinewave data and add it to some dates.
    d= datetime.now()
    dates = []
    s1 = np.sin(np.arange(0, 10, 0.1))
    s2 = np.sin(np.arange(1, 10, 0.1))
    s3 = np.sin(np.arange(2, 10, 0.1))
    sinelength = min([len(s1), len(s1), len(s3)])
    s1 = s1[0:sinelength]
    s2 = s2[0:sinelength]
    s2 = s2[0:sinelength]
    for i in range(sinelength):
        d = d + timedelta(days=1)
        dates.append(d.strftime("%d/%m/%Y"))
    plotdict = {'dates':dates, 's1':s1, 's2':s2, 's3':s3}
    draw(plotdict)

create_plots()