我被困在一些感觉应该相对容易的事情上.我下面的代码是基于我正在研究的更大项目的示例.我没有理由发布所有细节,所以请接受我带来的数据结构.
基本上,我正在创建一个条形图,我只是想弄清楚如何在条形图上添加值标签(在条形图的中心,或者在它上面).一直在寻找网络上的样本,但没有成功实现我自己的代码.我相信解决方案要么是'text',要么是'annotate',但是我:a)不知道使用哪一个(一般来说,还没弄清楚何时使用哪个).b)无法看到要么呈现价值标签.非常感谢您的帮助,我的代码如下.提前致谢!
import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
pd.set_option('display.mpl_style', 'default')
%matplotlib inline
# Bring some raw data.
frequencies = [6, 16, 75, 160, 244, 260, 145, 73, 16, 4, 1]
# In my original code I create a series and run on that,
# so for consistency I create a series from the list.
freq_series = pd.Series.from_array(frequencies)
x_labels = [108300.0, 110540.0, 112780.0, 115020.0, 117260.0, 119500.0,
121740.0, 123980.0, 126220.0, 128460.0, 130700.0]
# Plot the figure. …我正在尝试在matplotlib中创建一个分组的条形图,遵循库中的示例.我使用以下内容:
import matplotlib.pyplot as plt
plt.figure(figsize=(7,7), dpi=300)
xticks = [0.1, 1.1]
groups = [[1.04, 0.96],
[1.69, 4.02]]
group_labels = ["G1", "G2"]
num_items = len(group_labels)
ind = arange(num_items)
width = 0.1
s = plt.subplot(1,1,1)
for num, vals in enumerate(groups):
print "plotting: ", vals
group_len = len(vals)
gene_rects = plt.bar(ind, vals, width,
align="center")
ind = ind + width
num_groups = len(group_labels)
# Make label centered with respect to group of bars
# Is there a less complicated way?
offset = (num_groups / …