更改直方图中的条形颜色

时间:2020-05-14 22:01:17

标签: python matplotlib

我想根据条件显示带有不同颜色条形的直方图。 我的意思是,我想将2到5之间的条形设置为不同的颜色。

我已经尝试过了:

bins = np.linspace(0, 20, 21)

lista_float_C1 = [1,1,1,2,2,2,3,4,4,5,5,6,7,8,8,8,8,10,11,11]

colors = []

y = plt.hist(lista_float_C1, bins, alpha=0.5 )

for x in y[1]:
    if (x >= 2)&(x=<5):
        colors.append('r')
    else: 
        colors.append('b')
print(colors)    

plt.hist(lista_float_C1, bins, alpha=0.5, color = colors )
plt.show()

我收到此错误:

color kwarg must have one color per data set. 1 data sets and 21 colors were provided

1 个答案:

答案 0 :(得分:1)

您可以在绘制补丁后对其进行修改:

lista_float_C1 = [1,1,1,2,2,2,3,4,4,5,5,6,7,8,8,8,8,10,11,11]

fig,ax = plt.subplots()
ax.hist(lista_float_C1, bins, alpha=0.5 )

for p in ax.patches:
    x =  p.get_height()

    # modify this to fit your needs
    color = 'r' if (2<=x<=5) else 'b'
    p.set_facecolor(color)

plt.show()
plt.show()

输出:

enter image description here

如果要按bin值着色:

for p in ax.patches:
    # changes here
    x,y =  p.get_xy()

    color = 'r' if (2<=x<=5) else 'b'
    p.set_facecolor(color)
plt.show()

输出:

enter image description here