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 plotlyimport plotly.offline as offlineimport plotly.graph_objs as gooffline.init_notebook_mode()from collections import Counterimport 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。