我有一本aggregate_dict
以字母a:z为键的字典,每个键都有一个列表,该列表正好包含11个介于0和1之间的数字值作为其关联值。我希望使用此数据来创建散点图,其中字母在x轴上从a到z排列,给定字母的每个值在y轴上排列,如下所示:
我通常在一秒钟之内用R对其进行散列处理,但是我正在使用的计算机上没有R,并且我没有管理员权限,因此我只能在Python中进行处理。我正在尝试通过以下方式(下面是简化的dict)来解决这个问题:
from matplotlib import pyplot
def scatterplot(x,y):
pyplot.plot(x,y,'b.')
pyplot.ylim(0,1)
pyplot.title("Relative Frequency of Letters")
pyplot.show()
x_vals = []
y_vals = []
aggregate_dict = {'a':[.1,.2,.3],'b':[.2,.3,.4]}
for u in aggregate_dict:
x_vals.append(u)
y_vals.append(aggregate_dict[u])
scatterplot( x_vals, y_vals )
不幸的是,这种方法产生以下痕迹:
Traceback (most recent call last):
File "C:/Users/dduhaime/Desktop/letter_distributions_each_section_tale.py", line 74, in <module>
scatterplot(x_vals, y_vals )
File "C:/Users/dduhaime/Desktop/letter_distributions_each_section_tale.py", line 56, in scatterplot
pyplot.plot(x,y,'b.')
File "C:\Python27\ArcGIS10.2\lib\site-packages\matplotlib\pyplot.py", line 2987, in plot
ret = ax.plot(*args, **kwargs)
File "C:\Python27\ArcGIS10.2\lib\site-packages\matplotlib\axes.py", line 4138, in plot
self.add_line(line)
File "C:\Python27\ArcGIS10.2\lib\site-packages\matplotlib\axes.py", line 1497, in add_line
self._update_line_limits(line)
File "C:\Python27\ArcGIS10.2\lib\site-packages\matplotlib\axes.py", line 1508, in _update_line_limits
path = line.get_path()
File "C:\Python27\ArcGIS10.2\lib\site-packages\matplotlib\lines.py", line 743, in get_path
self.recache()
File "C:\Python27\ArcGIS10.2\lib\site-packages\matplotlib\lines.py", line 420, in recache
x = np.asarray(xconv, np.float_)
File "C:\Python27\ArcGIS10.2\lib\site-packages\numpy\core\numeric.py", line 320, in asarray
return array(a, dtype, copy=False, order=order)
ValueError: could not convert string to float: a
有谁知道我如何能够解决该错误并继续进行我的绘图?如果您能提供任何建议,我将不胜感激!
import matplotlib.pyplot as plt
from matplotlib.ticker import FuncFormatter, MultipleLocator
x_data = np.arange(97, 110)
y_data = np.random.rand(len(x_data))
def ord_to_char(v, p=None):
return chr(int(v))
fig, ax = plt.subplots()
ax.plot(x_data, y_data, 'x')
ax.xaxis.set_major_formatter(FuncFormatter(ord_to_char))
ax.xaxis.set_major_locator(MultipleLocator(1))
plt.show()
相关文档:http : //matplotlib.org/api/ticker_api.html#module-matplotlib.ticker
本文收集自互联网,转载请注明来源。
如有侵权,请联系[email protected] 删除。
我来说两句