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Parallel Coordinates - Seasonality Example
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| """ | |
| parallel_coordinates seasonality example | |
| """ | |
| import math | |
| import datetime as dt | |
| import numpy as np | |
| import pandas as pd | |
| import matplotlib.pyplot as plt | |
| from pandas.tools.plotting import parallel_coordinates | |
| pd.options.display.mpl_style = 'ggplot' | |
| randn = np.random.randn | |
| ix = pd.date_range(dt.date(2011,1,1), dt.date(2014,12,31)) | |
| n = len(ix) | |
| z = np.linspace(0, math.pi * 2 * len(set(ix.year)), n) | |
| y = np.sin(z) | |
| df = pd.DataFrame({'var': y*(1+randn(n))}, index=ix) | |
| df['yr'] = df.index.year | |
| df['day'] = df.groupby('yr').cumcount().add(1) | |
| pvt = pd.pivot_table(df, index='yr', columns='day')['var'] | |
| pvt = pvt.reset_index() | |
| fig, ax = plt.subplots(nrows=3, ncols=1, figsize=(6,8)) | |
| df['var'].plot(ax=ax[0]) | |
| parallel_coordinates(pvt, 'yr', ax=ax[1]) | |
| parallel_coordinates(pvt, 'yr', ax=ax[2], axvlines=False) | |
| ttl = ['var', | |
| 'parallel_coordinates w/ axvlines', | |
| 'parallel_coordinates, no axvlines'] | |
| [ax[i].set_title(x) for i, x in enumerate(ttl)] | |
| [ax[i].legend(loc=1, prop={'size': 10}) for i in range(3)] | |
| [ax[i].tick_params(axis='both', which='major', labelsize=10) for i in range(3)] | |
| st, end = ax[1].get_xlim() | |
| xticks = range(int(st), int(end), 30) | |
| ax[1].xaxis.set_ticks(xticks) | |
| ax[1].set_xticklabels(xticks) | |
| ax[2].xaxis.set_ticks(xticks) | |
| ax[2].set_xticklabels(xticks) | |
| fig.subplots_adjust(hspace=0.33) | |
| plt.show() |
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