Question

我正在尝试在带有geojson文件的散点图框上绘制纬度/经度点。我将geojson文件放入了panada的数据框中，并为lat和lon制作了一个空列表，因为那是所有scattermapbox都能接受的。结果未如预期。

Python密谋：

import plotly.graph_objects as go
import pandas as pd
from pandas.io.json import json_normalize
import json

geojson = json.load(open("Data/High Comfort Bike Lanes.geojson"))
geojson = json_normalize(geojson['features'], sep="_")

lon_comfortBike = []
lat_comfortBike = []

for l1 in geojson['geometry_coordinates']:
    for l2 in l1:
        for l3 in l2:
            lon_comfortBike.append(l2[0])
            lat_comfortBike.append(l2[1])

fig = go.Figure(
       data=[
            go.Scattermapbox(
            name='High Comfort Bike Route',
            hoverinfo='name',
            lat=lat_comfortBike,
            lon=lon_comfortBike,
            mode="lines",
            line=dict(width=3, color="#F00")
            ]
        )
    mapLegend = go.layout.Legend(
            x=0,
            y=1,
            traceorder="normal",
            font=dict(
                family="sans-serif",
                size=12,
                color="black"
            ),
            bgcolor="LightSteelBlue",
            bordercolor="Black",
            borderwidth=2
        )

fig.update_layout(
    showlegend=True,
    legend=mapLegend,
    margin={"r":0,"t":0,"l":0,"b":0},
    mapbox=go.layout.Mapbox(
        style="stamen-terrain", 
        zoom=12, 
        center_lat = 40.55,
        center_lon = -105.08,
    )
)
fig.show()

Python数据框：

0      [[[-105.077274, 40.514625], [-105.077005, 40.5...
1      [[[-105.024284, 40.509791], [-105.024274, 40.5...
2      [[[-105.087928, 40.578187], [-105.087939, 40.5...
3      [[[-105.11976, 40.589318], [-105.11977, 40.587...
4      [[[-105.083718, 40.568761], [-105.08459, 40.56...
                             ...
995    [[[-105.05362, 40.525161], [-105.053607, 40.52...
996    [[[-105.030003, 40.62114], [-105.030012, 40.62...
997    [[[-105.123316, 40.560645], [-105.123353, 40.5...
998    [[[-105.070162, 40.580083], [-105.070175, 40.5...
999    [[[-105.120617, 40.560044], [-105.120637, 40.5...
Name: geometry_coordinates, Length: 1000, dtype: object

关于如何正确遍历数据框并绘制这些线的任何建议？

Answer 1

好的。因此，将熊猫与plotly scattermapbox一起使用是一件令人头疼的事情。这就是我从geojson文件中提取坐标以在lat的{{1}}和lon参数中进行绘制的方式。

go.Scattermapbox

如何用熊猫绘制一个可绘的散点图框？

1 个答案: