水平条形图:调整y轴标签大小
我在使用pandas的时候,想做一个横向条形图,但发现y轴的标签被截断了。
我用的数据是……
Term value
GO:0043232~intracellular non-membrane-bounded organelle 69.40887024
GO:0043228~non-membrane-bounded organelle 68.41919153
GO:0051384~response to glucocorticoid stimulus 58.50901338
hsa04310:Wnt signaling pathway 24.56895837
GO:0016055~Wnt receptor signaling pathway 18.00929324
GO:0042127~regulation of cell proliferation 5.215295969
y轴的标签我用了“Term”这一列。
我的代码是……
a=list(final_table['value'])
b=list(final_table['Term'])
data=pd.DataFrame(a,index=b,columns=['value'])
data[:31].plot(kind='barh',color='k',alpha=0.7)
matplotlib.pyplot.savefig('test.png')
横向条形图的例子看起来是这样的:图
我该怎么解决这个问题呢?除了保存图片,我还尝试用pandas和XlsxWriter把图写到Excel文件里(pandas和XlsxWriter),但好像XlsxWriter没有绘制横向条形图的功能。
1 个回答
3
你可以这样做:
In [1]: data
Out[1]:
value
Term
GO:0043232~intracellular non-membrane-bounded organelle 69.408870
GO:0043228~non-membrane-bounded organelle 68.419192
GO:0051384~response to glucocorticoid stimulus 58.509013
hsa04310:Wnt signaling pathway 24.568958
GO:0016055~Wnt receptor signaling pathway 18.009293
GO:0042127~regulation of cell proliferation 5.215296
In [2]: data.plot(kind="barh", fontsize=9, figsize=(15,8))
In [3]: plt.yticks(range(6),
["\n".join(
[" ".join(i.split("~")[:-1]),
"\n".join(i.split("~")[-1].split(" "))])
for i in a.index])
这里你可以通过以下方式来腾出空间:
- 减小字体大小
- 增大图形尺寸
- 把你的文本分成不同的行:
.
"\n".join([
" ".join(i.split("~")[:-1]), # everything before the "~" () actually [0] but since the 4th line has no "~", I put all but last to avoid redundancy.
"\n".join(i.split("~")[-1].split(" ")) # here line break every word.
])
希望这能帮到你,如果你有问题,随时问我。