Python 使用ggplot以x轴打印日期或时间
我的数据格式如下:Python 使用ggplot以x轴打印日期或时间,python,plot,pandas,python-ggplot,Python,Plot,Pandas,Python Ggplot,我的数据格式如下: datetime, count 2011-01-01 00:00:00, 10 2011-01-01 01:00:00, 15 2011-01-01 02:00:00, 20 ... 使用ggplot,我想绘制以下两个图形: 计数随时间的变化 日积月累 我可以通过将字符串转换为日期时间来绘制第一个 csv_file['datetime'] = pd.to_datetime(csv_file['datetime']) 然后使用ggplot绘制它 对于第二个,我将dateti
datetime, count
2011-01-01 00:00:00, 10
2011-01-01 01:00:00, 15
2011-01-01 02:00:00, 20
...
使用ggplot,我想绘制以下两个图形:
csv_file['datetime'] = pd.to_datetime(csv_file['datetime'])
然后使用ggplot绘制它
对于第二个,我将datetime转换为time
csv_file['time'] = csv_file['datetime'].map(methodcaller('time'))
type(csv_file['time'][4]) = <type 'datetime.time'>
绘图代码:
ggplot1 = ggplot(aes(x='time', y='count'), data=csv_file) + \
geom_point(color='lightblue') + \
stat_smooth(span=.15, color='black', se=True) + \
ggtitle("Test") + \
xlab("time") + \
ylab("count")
ggplot1.draw()
负责人:
完整堆栈跟踪:
File "hello.py", line 43, in <module>
run()
File "hello.py", line 41, in run
ggplot1.draw()
File "/Library/Python/2.7/site-packages/ggplot/ggplot.py", line 305, in draw
callbacks = geom.plot_layer(data, ax)
File "/Library/Python/2.7/site-packages/ggplot/geoms/geom.py", line 115, in plot_layer
data = self._calculate_stats(data)
File "/Library/Python/2.7/site-packages/ggplot/geoms/geom.py", line 275, in _calculate_stats
new_data = self._stat._calculate(data)
File "/Library/Python/2.7/site-packages/ggplot/stats/stat_smooth.py", line 43, in _calculate
x, y, y1, y2 = smoothers.lowess(x, y, span=span)
File "/Library/Python/2.7/site-packages/ggplot/components/smoothers.py", line 53, in lowess
result = smlowess(np.array(y), np.array(x), frac=span)
File "/Library/Python/2.7/site-packages/statsmodels-0.6.0-py2.7-macosx-10.9-intel.egg/statsmodels/nonparametric/smoothers_lowess.py", line 128, in lowess
exog = np.asarray(exog, float)
File "/Library/Python/2.7/site-packages/numpy-1.9.0.dev_297f54b-py2.7-macosx-10.9-intel.egg/numpy/core/numeric.py", line 460, in asarray
return array(a, dtype, copy=False, order=order)
TypeError: float() argument must be a string or a number
文件“hello.py”,第43行,在
运行()
文件“hello.py”,第41行,在运行中
ggplot1.draw()
文件“/Library/Python/2.7/site packages/ggplot/ggplot.py”,第305行,在绘图中
回调=几何绘图层(数据,ax)
文件“/Library/Python/2.7/site packages/ggplot/geoms/geom.py”,第115行,在plot_层中
数据=自身。计算统计数据(数据)
文件“/Library/Python/2.7/site packages/ggplot/geoms/geom.py”,第275行,在统计中
新数据=自我统计计算(数据)
文件“/Library/Python/2.7/site packages/ggplot/stats/stat_smooth.py”,第43行,in_计算
x、 y,y1,y2=更平滑的。下(x,y,span=span)
文件“/Library/Python/2.7/site packages/ggplot/components/smoothers.py”,第53行,小写
结果=smlowess(np.数组(y)、np.数组(x)、分形=跨度)
文件“/Library/Python/2.7/site packages/statsmodels-0.6.0-py2.7-macosx-10.9-intel.egg/statsmodels/nonparametric/smoothers_lowss.py”,第128行,小写
exog=np.asarray(exog,浮动)
asarray中的文件“/Library/Python/2.7/site packages/numpy-1.9.0.dev_297f54b-py2.7-macosx-10.9-intel.egg/numpy/core/numeric.py”,第460行
返回数组(a,数据类型,copy=False,order=order)
TypeError:float()参数必须是字符串或数字
这看起来像ggplot中的一个bug。您可以发布完整的绘图代码和数据文件的头部(csv\u file.head()
)。如果使用ipython,请显式运行.draw()
(p=ggplot(…)+geom_something(…)+…;p.draw()
)以获取完整的堆栈跟踪。谢谢@Janshulz我用plot和csv head更新了问题,你能不能也显示完整的堆栈跟踪,而不仅仅是最后一行?@Janshulz我用完整的堆栈跟踪更新了问题!我添加了一个bug:。目前我不知道如何解决。。。
datetime time count
0 2011-01-01 00:00:00 00:00:00 39
1 2011-01-01 01:00:00 01:00:00 40
2 2011-01-01 02:00:00 02:00:00 10
3 2011-01-01 03:00:00 03:00:00 14
4 2011-01-01 04:00:00 04:00:00 18
File "hello.py", line 43, in <module>
run()
File "hello.py", line 41, in run
ggplot1.draw()
File "/Library/Python/2.7/site-packages/ggplot/ggplot.py", line 305, in draw
callbacks = geom.plot_layer(data, ax)
File "/Library/Python/2.7/site-packages/ggplot/geoms/geom.py", line 115, in plot_layer
data = self._calculate_stats(data)
File "/Library/Python/2.7/site-packages/ggplot/geoms/geom.py", line 275, in _calculate_stats
new_data = self._stat._calculate(data)
File "/Library/Python/2.7/site-packages/ggplot/stats/stat_smooth.py", line 43, in _calculate
x, y, y1, y2 = smoothers.lowess(x, y, span=span)
File "/Library/Python/2.7/site-packages/ggplot/components/smoothers.py", line 53, in lowess
result = smlowess(np.array(y), np.array(x), frac=span)
File "/Library/Python/2.7/site-packages/statsmodels-0.6.0-py2.7-macosx-10.9-intel.egg/statsmodels/nonparametric/smoothers_lowess.py", line 128, in lowess
exog = np.asarray(exog, float)
File "/Library/Python/2.7/site-packages/numpy-1.9.0.dev_297f54b-py2.7-macosx-10.9-intel.egg/numpy/core/numeric.py", line 460, in asarray
return array(a, dtype, copy=False, order=order)
TypeError: float() argument must be a string or a number