Я хочу узнать, как использовать Plotly с Python для анализа данных.
Я использовал этот сайт в качестве ссылки.
Мой текущий код выглядит так:
from plotly import tools
import plotly as py
import plotly.graph_objs as go
py.offline.init_notebook_mode(connected=True)
# Create linear regression object
regr = linear_model.LinearRegression()
# Train the model using the training sets
regr.fit(X_train, y_train)
p1 = go.Scatter(x=X_test,
y=y_test,
mode='markers',
marker=dict(color='black')
)
p2 = go.Scatter(x=X_test,
y=regr.predict(X_test),
mode='lines',
line=dict(color='blue', width=3)
)
layout = go.Layout(xaxis=dict(ticks='', showticklabels=False,
zeroline=False),
yaxis=dict(ticks='', showticklabels=False,
zeroline=False),
showlegend=False, hovermode='closest')
fig = go.Figure(data=[p1, p2], layout=layout)
py.offline.iplot(fig)
Однако мой вывод выглядит как
Если бы я следил за сайтом по каждой строке, я бы получил это:
from plotly import tools
import plotly as py
import plotly.graph_objs as go
py.offline.init_notebook_mode(connected=True)
# Create linear regression object
regr = linear_model.LinearRegression()
# Train the model using the training sets
regr.fit(X_train, y_train)
def data_to_plotly(x):
k = []
for i in range(0, len(x)):
k.append(x[i][0])
return k
p1 = go.Scatter(x=data_to_plotly(X_test),
y=y_test,
mode='markers',
marker=dict(color='black')
)
p2 = go.Scatter(x=data_to_plotly(X_test),
y=regr.predict(X_test),
mode='lines',
line=dict(color='blue', width=3)
)
layout = go.Layout(xaxis=dict(ticks='', showticklabels=False,
zeroline=False),
yaxis=dict(ticks='', showticklabels=False,
zeroline=False),
showlegend=False, hovermode='closest')
fig = go.Figure(data=[p1, p2], layout=layout)
py.offline.iplot(fig)
Но это приведет к следующей ошибке:
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
~\Anaconda3\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
2656 try:
-> 2657 return self._engine.get_loc(key)
2658 except KeyError:
pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()
pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()
pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()
pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()
KeyError: 0
During handling of the above exception, another exception occurred:
KeyError Traceback (most recent call last)
<ipython-input-84-5895927e91e2> in <module>
21 return k
22
---> 23 p1 = go.Scatter(x=data_to_plotly(X_test),
24 y=y_test,
25 mode='markers',
<ipython-input-84-5895927e91e2> in data_to_plotly(x)
17
18 for i in range(0, len(x)):
---> 19 k.append(x[i][0])
20
21 return k
~\Anaconda3\lib\site-packages\pandas\core\frame.py in __getitem__(self, key)
2925 if self.columns.nlevels > 1:
2926 return self._getitem_multilevel(key)
-> 2927 indexer = self.columns.get_loc(key)
2928 if is_integer(indexer):
2929 indexer = [indexer]
~\Anaconda3\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
2657 return self._engine.get_loc(key)
2658 except KeyError:
-> 2659 return self._engine.get_loc(self._maybe_cast_indexer(key))
2660 indexer = self.get_indexer([key], method=method, tolerance=tolerance)
2661 if indexer.ndim > 1 or indexer.size > 1:
pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()
pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()
pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()
pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()
KeyError: 0
Я новичок в Плотли. Как мне это исправить?
EDIT:
мой X_test выглядит так:
X_test