无法查看美国各州的热图

Question

我已经编写了以下代码来加热美国各州的热图。但我无法在 Google Colab 中获取输出图像。

州代码是美国特定州的两个字母代码。

temp = pd.DataFrame(project_data.groupby("school_state")["project_is_approved"].apply(np.mean)).reset_index()

temp.columns = ['state_code', 'num_proposals']

scl = [[0.0, 'rgb(242,240,247)'],[0.2, 'rgb(218,218,235)'],[0.4, 'rgb(188,189,220)'],\

            [0.6, 'rgb(158,154,200)'],[0.8, 'rgb(117,107,177)'],[1.0, 'rgb(84,39,143)']]

data = [ dict(

        type='choropleth',

        colorscale = scl,

        autocolorscale = False,

        locations = temp['state_code'],

        z = temp['num_proposals'].astype(float),

        locationmode = 'USA-states',

        text = temp['state_code'],

        marker = dict(line = dict (color = 'rgb(255,255,255)',width = 2)),

        colorbar = dict(title = "% of pro")

    ) ]

layout = dict(

        title = 'Project Proposals % of Acceptance Rate by US States',

        geo = dict(

            scope='usa',

            projection=dict( type='albers usa' ),

            showlakes = True,

            lakecolor = 'rgb(255, 255, 255)',

        ),

    )

fig = dict(data=data, layout=layout)

offline.iplot(fig, filename='us-map-heat-map')

我导入了以下库：

from chart_studio import plotly

import plotly.offline as offline

import plotly.graph_objs as go

offline.init_notebook_mode()

from collections import Counter

import chart_studio.plotly as py

Answer 1

使用您的数据尝试以下代码：（我尝试将您的变量放在正确的位置）choropleth = go.Choropleth(    locations=temp['state_code'],    locationmode='USA-states',    z = temp['num_proposals'].astype(float),    zmin = 0,    zmax = max(temp['num_proposals'].astype(float)),    colorscale=scl,    autocolorscale=False,    text='Proposals',     marker_line_color='white',    colorbar_title="% Acceptance Rate")fig = go.Figure(data=choropleth)fig.update_layout(    title_text='Project Proposals % of Acceptance Rate by US States',    geo = dict(        scope='usa',        projection=go.layout.geo.Projection(type = 'albers usa'),        showlakes=True,        lakecolor='rgb(255, 255, 255)'),)fig.show()此代码的工作原理是使用您的数据创建 Plotly Choropleth 图形对象，然后将该对象加载到 Plotly Figure Graph 对象中，然后更新布局（以获得正确的标题和缩放），最后显示图形。