我正在尝试使用seaborn.factorplot创建条形图。我的代码如下所示:
import seaborn
import matplotlib.pyplot as plt
df=pd.read_csv('data.csv')
fg = seaborn.factorplot(x='vesselID', y='dur_min', hue='route', size=6,aspect=2 ,kind='bar', data=df)
我的 data.csv 看起来像这样
,route,vesselID,dur_min
0,ANA-SJ,13,39.357894736842105
1,ANA-SJ,20,24.747663551401867
2,ANA-SJ,38,33.72142857142857
3,ANA-SJ,69,37.064516129032256
4,ED-KING,30,22.10062893081761
5,ED-KING,36,21.821428571428573
6,ED-KING,68,23.396551724137932
7,F-V-S,1,13.623239436619718
8,F-V-S,28,14.31294964028777
9,F-V-S,33,16.161616161616163
10,MUK-CL,18,13.953191489361702
11,MUK-CL,19,14.306513409961687
12,PD-TAL,65,12.477272727272727
13,PT-COU,52,27.48148148148148
14,PT-COU,66,28.24778761061947
15,SEA-BI,25,30.94267515923567
16,SEA-BI,32,31.0
17,SEA-BI,37,31.513513513513512
18,SEA-BR,2,55.8
19,SEA-BR,13,57.0
20,SEA-BR,15,54.05434782608695
21,SEA-BR,17,50.43859649122807
现在我的问题是如何改变条的宽度,我无法通过改变大小和方面来实现这一点。
答案 0 :(得分:15)
就我而言,我不必定义自定义函数来更改宽度(如前所述)(由于所有条形都未对齐,因此btw对我不起作用)。我只是将属性dodge=False
添加到了seaborn绘图函数的参数中,就成功了!例如
sns.countplot(x='x', hue='y', data=data, dodge=False);
在此处查看其他参考:https://github.com/mwaskom/seaborn/issues/871
我的条形图现在看起来像这样:
答案 1 :(得分:8)
In fact, you can do it using directly the patches attributes with the function set_width
. However if you only do that, you will just modify your patches width but not the position on the axe, so you have to change the x coordinates too.
import pylab as plt
import seaborn as sns
tips = sns.load_dataset("tips")
fig, ax = plt.subplots()
sns.barplot(data=tips, ax=ax, x="time", y="tip", hue="sex")
def change_width(ax, new_value) :
for patch in ax.patches :
current_width = patch.get_width()
diff = current_width - new_value
# we change the bar width
patch.set_width(new_value)
# we recenter the bar
patch.set_x(patch.get_x() + diff * .5)
change_width(ax, .35)
plt.show()
答案 2 :(得分:0)
我不认为seaborn会这样做,但是可能的mwaskom将会验证。
首先,在seaborn中调整matplotlib调用的一般方法是传递更多的kwargs(或者在某些情况下是dict),这会改变你的代码:
fg = seaborn.factorplot(x='vesselID', y='dur_min', hue='route',
size=6, aspect=2,
kind='bar',
width=10, # Factorplot passes arguments through
data=df)
但是当我运行时,错误是:
TypeError:bar()获得了关键字参数' width'
的多个值
并且,是的,事实证明所有的seaborn分类比较定义width
并围绕它构建了许多美学。您可以直接查看categorical.py中的draw_bars
功能,当然您可以编辑您自己的categorical.py副本,但是seaborn风格的那部分是目前正在烘焙。
答案 3 :(得分:0)
seaborn是matplotlib之上的更高级别的库。虽然seaborn不具备控制条宽度的灵活性,但matplotlib可以通过一行代码来实现:
plt.bar(data.xcol,data.ycol,4)
答案 4 :(得分:0)
这是@jsgounot答案的略微修改,我发现这很有启发性。修改有助于使条形图在适当的xtick上居中。
def change_width(ax, new_value) :
locs = ax.get_xticks()
for i,patch in enumerate(ax.patches):
current_width = patch.get_width()
diff = current_width - new_value
# we change the bar width
patch.set_width(new_value)
# we recenter the bar
patch.set_x(locs[i//4] - (new_value * .5))
答案 5 :(得分:0)
另一种解决方案是修改box_aspect:
import pylab as plt
import seaborn as sns
tips = sns.load_dataset("tips")
fig, ax = plt.subplots()
ax = sns.barplot(data=tips, ax=ax, x="time", y="tip", hue="sex")
ax.set_box_aspect(10/len(ax.patches)) #change 10 to modify the y/x axis ratio
plt.show()