[英]Python and Plotly offline: create (empty) graph and add traces with for-loop
我是编程新手,我花了很多时间寻找解决方案,但我似乎无法做到正确。 我有一些存储在字典中的测量数据集。 我想用图表创建一个图表,其中显示了来自测量数据的所有曲线。 我正在尝试创建一个空图,然后遍历字典并将两个存储的dataFrames的两列作为跟踪添加到每个键的图形中。
我做错了什么或者我怎么能以另一种方式做到这一点?
import plotly as py
from plotly.offline import download_plotlyjs, init_notebook_mode, plot, iplot
import plotly.graph_objs as go
figure1 = go.Figure()
for key in dictofdf:
trace1 = go.Scatter(
y=df_1['force'],
x=df_1['displacement'],
mode='line',
marker=go.Marker(color='rgb(255, 127, 14)'),
name='load'
)
trace2 = go.Scatter(
y=df_2['force'],
x=df_2['displacement'],
mode='line',
marker=go.Marker(color='rgb(55, 137, 3)'),
name='unload'
)
figure1.append_trace(trace1,1,1)
figure1.append_trace(trace2,1,1)
py.offline.iplot(figure1, filename='force-displacement-data', image='jpeg')
有了我到目前为止的代码,我得到了错误
--------------------------------------------------------------------------- TypeError Traceback (most recent call
last) <ipython-input-42-4ea5d9b8a638> in <module>()
50 )
51
---> 52 figure1.append_trace(trace1,1,1)
53 figure1.append_trace(trace2,1,1)
54
C:\Users\xxxxx\Anaconda3\lib\site-packages\plotly\graph_objs\graph_objs.py
in append_trace(self, trace, row, col)
914 "Note: the starting cell is (1, 1)")
915 try:
--> 916 ref = grid_ref[row-1][col-1]
917 except IndexError:
918 raise Exception("The (row, col) pair sent is out of range. "
TypeError: 'NoneType' object is not subscriptable
append_trace
中的append_trace适用于子图,但不适用于常规Figure
。 key
用于name
跟踪。 import plotly
plotly.offline.init_notebook_mode()
figure1 = plotly.tools.make_subplots(rows=1, cols=2)
dictofdf = {'measurement1': {'df_1': {'displacement': [1, 2, 3],
'force': [1, 3, 6]},
'df_2': {'displacement': [1, 3, 6],
'force': [5, 7, 9]}
},
'measurement2': {'df_1': {'displacement': [1, 4, 5],
'force': [8, 10 , 12]},
'df_2': {'displacement': [1, 4, 6],
'force': [7, 8, 9]}
}
}
for key in dictofdf:
trace1 = plotly.graph_objs.Scatter(
y=dictofdf[key]['df_1']['force'],
x=dictofdf[key]['df_1']['displacement'],
mode='line',
marker=plotly.graph_objs.Marker(color='rgb(255, 127, 14)'),
name='{}: load'.format(key)
)
trace2 = plotly.graph_objs.Scatter(
y=dictofdf[key]['df_2']['force'],
x=dictofdf[key]['df_2']['displacement'],
mode='line',
marker=plotly.graph_objs.Marker(color='rgb(55, 137, 3)'),
name='{}: unload'.format(key)
)
figure1.append_trace(trace1, 1, 1)
figure1.append_trace(trace2, 1, 2)
plotly.offline.iplot(figure1)
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