matplotlib.pyplot.hist(柱状图)

matplotlib.pyplot.hist(x, bins=None, range=None, normed=False, weights=None, cumulative=False, bottom=None, histtype=’bar’, align=’mid’, orientation=’vertical’, rwidth=None, log=False, color=None, label=None, stacked=False, hold=None, data=None, **kwargs)

Parameters:

1. x : (n,) array or sequence of (n,) arrays(可以是一个array也可以是多个array)
2. integer or array_like or ‘auto’, optional(可以是整型来设置箱子的宽度,也可以是array,指定每个箱子的宽度)
3. range : tuple or None, optional(设置显示的范围,范围之外的将被舍弃)
4. normed : boolean, optional(?)
5. weights : (n, ) array_like or None, optional(?)
6. cumulative : boolean, optional(?)
7. bottom : array_like, scalar, or None(?)
8. histtype : {‘bar’, ‘barstacked’, ‘step’, ‘stepfilled’}, optional(选择展示的类型,默认为bar)
9. align : {‘left’, ‘mid’, ‘right’}, optional(对齐方式)
10. orientation : {‘horizontal’, ‘vertical’}, optional(箱子方向)
11. log : boolean, optional(log刻度)
12. color : color or array_like of colors or None, optional(颜色设置)
13. label : string or None, optional(刻度标签)
14. stacked : boolean, optional(?)

return

1. n : array or list of arrays(箱子的值)
2. bins : array(箱子的边界)
3. patches : list or list of lists