我使用seaborn进行了绘制,这是我想为每条线添加一个标签。你能帮我吗?
import numpy as np
import matplotlib.pylab as plt
import matplotlib.dates as mdates
from matplotlib import style
import pandas as pd
%pylab inline
import seaborn as sns
sns.set_style('darkgrid')
import io
style.use('ggplot')
from datetime import datetime
import time
fig = plt.figure(figsize=(12, 8), dpi=100)
ax1 = fig.add_subplot(111)
x1 = pd.to_datetime(df_no_missing.TIMESTAMP, format="%h:%m")
y1 = df_no_missing.P_ACT_KW
y3 = df_no_missing.P_SOUSCR
yearFmt = mdates.DateFormatter("%H:%M:%S")
ax1.xaxis.set_major_formatter(yearFmt)
ax2 = ax1.twinx()
ax1.plot(x, y1, 'g-')
ax2.plot(x, y2, 'b-')
ax1.plot(x, y3, 'r-')
ax1.set_xlabel('temps')
ax1.set_ylabel('puissance', color='g')
ax2.set_ylabel('dépassement', color='b')
plt.ylim(plt.ylim()[0], 1.0)
plt.show()
预先谢谢你编辑
我尝试像您提到的那样:
fig = plt.figure(figsize=(12, 5), dpi=100)
ax1 = fig.add_subplot(111)
x1 = pd.to_datetime(df_no_missing.TIMESTAMP, format="%h:%m")
y1 = df_no_missing.P_ACT_KW
y3 = df_no_missing.P_SOUSCR
yearFmt = mdates.DateFormatter("%H:%M:%S")
ax1.xaxis.set_major_formatter(yearFmt)
ax2 = ax1.twinx()
ax1.plot(x, y1, 'g-', label='label 1')
ax2.plot(x, y2, 'b-', label='label 2')
ax1.plot(x, y3, 'r-', label='label 3')
ax1.plot(0, 0, 'b-', label='label 2')
ax.legend(loc=0) # add legend in top right corner
ax.grid() # show grid lines
ax1.set_xlabel('temps')
ax1.set_ylabel('puissance', color='g')
ax2.set_ylabel('dépassement', color='b')
plt.ylim(plt.ylim()[0], 1.0)
plt.show()
但是我得到了这个错误:
--------------------------------------------------------------------------- ValueError Traceback (most recent call last) C:\Users\Demonstrator\Anaconda3\lib\site-packages\IPython\core\formatters.py
在调用中(self,obj)337通过338否则:-> 339 return printer(obj)340#最后寻找特殊的方法名称341 method = _safe_get_formatter_method(obj,self.print_method)
C:\Users\Demonstrator\Anaconda3\lib\site-packages\IPython\core\pylabtools.py
在(fig)226227中,如果格式为'png':-> 228 png_formatter.for_type(图,lambda图:print_figure(fig,'png',** kwargs))229如果是'retina'格式或'png2x'格式:230 png_formatter.for_type(图,lambda图:retina_figure(图,** kwargs))
C:\Users\Demonstrator\Anaconda3\lib\site-packages\IPython\core\pylabtools.py
在print_figure(fig,fmt,bbox_inches,** kwargs)中117118 bytes_io = BytesIO()-> 119图.canvas.print_figure(bytes_io,** kw)120 data = bytes_io.getvalue()121如果fmt ==' svg':
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\backend_bases.py
在print_figure中(self,filename,dpi,facecolor,edgecolor,direction,format,** kwargs)2178 direction = orientation,2179 dryrun = True,-> 2180 ** kwargs)2181 renderer = self.figure._cachedRenderer 2182 bbox_inches = self .figure.get_tightbbox(渲染器)
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py
在print_png(自身,filename_or_obj,* args,** kwargs)中525526 def print_png(self,filename_or_obj,* args,** kwargs):-> 527 FigureCanvasAgg.draw(self)528渲染器= self.get_renderer()529 original_dpi = renderer.dpi
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\backends\backend_agg.py
在draw(self)472473中尝试:-> 474 self.figure.draw(self.renderer)475最后:476 RendererAgg.lock.release()
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\artist.py
在draw_wrapper(artist,renderer,* args,** kwargs)中59 def draw_wrapper(artist,renderer,* args,** kwargs):60 before(artist,renderer)---> 61 draw(artist,renderer,* args) ,** kwargs)之后62(艺术家,渲染器)63
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\figure.py
在draw(self,renderer)中1157 dsu.sort(key = itemgetter(0))1158 for zorder,a,func,args in dsu:-> 1159 func(* args)1160 1161 renderer.close_group('figure')
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\artist.py
在draw_wrapper(artist,renderer,* args,** kwargs)中59 def draw_wrapper(artist,renderer,* args,** kwargs):60 before(artist,renderer)---> 61 draw(artist,renderer,* args) ,** kwargs)之后62(艺术家,渲染器)63
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\axes\_base.py
在zorder的draw(自身,renderer,inframe)2322 2323中,一个在dsu中:-> 2324 a.draw(renderer)2325 2326 renderer.close_group('axes')
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\artist.py
在draw_wrapper(artist,renderer,* args,** kwargs)中59 def draw_wrapper(artist,renderer,* args,** kwargs):60 before(artist,renderer)---> 61 draw(artist,renderer,* args) ,** kwargs)之后62(艺术家,渲染器)63
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\axis.py
在draw(self,renderer,* args,** kwargs)中1104 renderer.open_group(name)1105-> 1106 ticks_to_draw = self._update_ticks(renderer)1107 ticklabelBoxes,ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw,1108 renderer)
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\axis.py
在_update_ticks((self,renderer))947948间隔= self.get_view_interval()-> 949 tick_tups = [t对于self.iter_ticks()中的t,如果self._smart_bounds:951#处理倒置限制
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\axis.py
in(.0)947 948 interval = self.get_view_interval()-> 949 tick_tups = [t for self.iter_ticks()中的t]如果self._smart_bounds:951#处理倒限
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\axis.py
in iter_ticks(self)890迭代所有主要和次要刻度线。891“”“-> 892 majorLocs = self.major.locator()893 majorTicks = self.get_major_ticks(len(majorLocs))894 self.major.formatter.set_locs(majorLocs)
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\dates.py
在呼叫(个体)1004 DEF呼叫(个体):1005 '返回的蜱的位置' - > 1006 self.refresh()1007返回self._locator()1008
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\dates.py
in update(self)1024 def refresh(self):1025'根据当前限制刷新内部信息。-> 1026 dmin,dmax = self.viewlim_to_dt()1027 self._locator = self.get_locator(dmin,dmax)1028
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\dates.py
在viewlim_to_dt(self)中768 vmin,vmax = vmax,vmin 769-> 770 return num2date(vmin,self.tz),num2date(vmax,self.tz)771772 def _get_unit(self):
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\dates.py
in num2date(x,tz)417 tz = _get_rc_timezone()418如果不是cbook.iterable(x):-> 419 return _from_ordinalf(x,tz)420 else:421 x = np.asarray(x)
C:\Users\Demonstrator\Anaconda3\lib\site-packages\matplotlib\dates.py
在_from_ordinalf(x,tz)中269270 ix = int(x)-> 271 dt = datetime.datetime.fromordinal(ix).replace(tzinfo = UTC)272273余数= float(x)-ix
ValueError: ordinal must be >= 1 <matplotlib.figure.Figure at 0x1d3b041a400>
print (df_no_missing.head())
TIMESTAMP P_ACT_KW PERIODE_TARIF P_SOUSCR SITE \ 145 2015-08-01 23:10:00 248.0 HC 425.0 ST GEREON 146 2015-08-01 23:20:00 244.0 HC 425.0 ST GEREON 147 2015-08-01 23:30:00 243.0 HC 425.0 ST GEREON 148 2015-08-01 23:40:00 238.0 HC 425.0 ST GEREON 149 2015-08-01 23:50:00 234.0 HC 425.0 ST GEREON TARIF depassement date time 145 TURPE_HTA5 0.0 2015-08-01 23:10:00 146 TURPE_HTA5 0.0 2015-08-01 23:20:00 147 TURPE_HTA5 0.0 2015-08-01 23:30:00 148 TURPE_HTA5 0.0 2015-08-01 23:40:00 149 TURPE_HTA5 0.0 2015-08-01 23:50:00
您可以label
为每个子图轴指定名称,并用于plt.legend
在右上角添加适当的图例。
fig = sns.plt.figure(figsize=(12, 5), dpi=100)
ax1 = fig.add_subplot(111)
x1 = pd.to_datetime(df_no_missing.TIMESTAMP)
y1 = df_no_missing.P_ACT_KW
y2 = df_no_missing.depassement
y3 = df_no_missing.P_SOUSCR
yearFmt = mdates.DateFormatter("%H:%M:%S")
ax1.xaxis.set_major_formatter(yearFmt)
ax1.plot(x1, y1, 'g-', label='p_act_kw')
ax1.plot(x1, y3, 'r-', label='p_souscr')
ax2 = ax1.twinx()
ax2.plot(x1, y2, 'b-', label='depassement')
h1, l1 = ax1.get_legend_handles_labels()
h2, l2 = ax2.get_legend_handles_labels()
ax1.legend(h1+h2, l1+l2, loc='center right')
ax1.set_xlabel('temps')
ax1.set_ylabel('puissance', color='g')
ax2.set_ylabel('dépassement', color='b')
sns.plt.ylim(plt.ylim()[0], 1.0)
sns.plt.show()
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我来说两句