create a bar chart using plotly

问题

I'm trying to create a bar chart using plotly.

The input data looks like:

In [7]: datag.ix[:,0].tolist()[1:6]
Out[7]: [2020.0, 5000.0, 6010.0, 6017.0, 6020.0]

and

In [8]:datag.ix[:,1].tolist()[1:6]
Out[8]: 
[0.005178087393490427,
 0.0014053668695097226,
 0.3174139251746979,
 0.006049724003653125,
 0.24824287385322272]

and the code is

import plotly
import plotly.offline as offline
import plotly.plotly as py 
import plotly.graph_objs as go

trace1 = go.Bar(
        x=[str(x) for x in datag.ix[:,0].tolist()[1:6]],#datag.ix[:,0].tolist()[1:6],
        y=datag.ix[:,1].tolist()[1:6],
        name='travel'
        )
data=[trace1]
layout= go.Layout(
        barmode= 'stack',
        title='Realization: 0, 0',
        xaxis=dict(title='Model'),
        yaxis=dict(title='Time (minutes)')
        )
fig= go.Figure(data=data, layout=layout)
offline.plot(fig, image='png', filename='stacked-bar')

I get the following output: However, the problem is I want to demonstrate the x-data just as strings which I tried with x=[str(x) for x in datag.ix[:,0].tolist()[1:6]]. Can some one help me to figure out how?

回答1:

Plotly 'assumes' your data type, even if you provide strings. Setting type to categorical for your xaxis resp. yaxis in layout should do the trick.

import pandas as pd
import plotly.offline as offline
import plotly.plotly as py 
import plotly.graph_objs as go

d = {'x': [None,
           2020.0, 
           5000.0, 
           6010.0, 
           6017.0, 
           6020.0], 
     'y': [None,
           0.005178087393490427,
           0.0014053668695097226,
           0.3174139251746979,
           0.006049724003653125,
           0.24824287385322272]}
datag = pd.DataFrame(data=d)

trace1 = go.Bar(
    x=[str(x) for x in datag.ix[:,0].tolist()[1:6]],
    y=datag.ix[:,1].tolist()[1:6],
    name='travel')

data = [trace1]
layout = go.Layout(
    barmode='stack',
    title='Realization: 0, 0',
    xaxis=dict(title='Model', 
               type='category'),
    yaxis=dict(title='Time (minutes)'))
fig = go.Figure(data=data, layout=layout)
offline.plot(fig, image='png', filename='stacked-bar')

来源：https://stackoverflow.com/questions/49628849/create-a-bar-chart-using-plotly

标签

python

plotly

stacked-chart