| """ | |
| ====================== | |
| Plotting with keywords | |
| ====================== | |
| There are some instances where you have data in a format that lets you | |
| access particular variables with strings: for example, with | |
| `numpy.recarray` or `pandas.DataFrame`. | |
| Matplotlib allows you to provide such an object with the ``data`` keyword | |
| argument. If provided, you may generate plots with the strings | |
| corresponding to these variables. | |
| """ | |
| import matplotlib.pyplot as plt | |
| import numpy as np | |
| np.random.seed(19680801) | |
| data = {'a': np.arange(50), | |
| 'c': np.random.randint(0, 50, 50), | |
| 'd': np.random.randn(50)} | |
| data['b'] = data['a'] + 10 * np.random.randn(50) | |
| data['d'] = np.abs(data['d']) * 100 | |
| fig, ax = plt.subplots() | |
| ax.scatter('a', 'b', c='c', s='d', data=data) | |
| ax.set(xlabel='entry a', ylabel='entry b') | |
| plt.show() | |