PNG图像未显示在Folium地图上

Question

我从这里运行了这个在 folium 地图上显示图像的 folium 示例。

我在我的 spyder 上运行了这个程序，虽然它在 jupyter 上运行良好

import numpy as np

import pandas as pd

import numpy.ma as ma

import folium

def make_data():

    x = np.linspace(-np.pi, np.pi, 101)

    sin = np.sin(x)

    cos = np.cos(x)

    cos[20:50] = np.NaN

    return pd.DataFrame(np.asanyarray([sin, cos]).T, columns=['sin', 'cos'], index=x)

df = make_data()

resolution, width, height = 75, 7, 3

station = '42'

lon, lat = -42, -21

m = folium.Map(location=[lat, lon], zoom_start=5)

import base64

import matplotlib.pyplot as plt

fig, ax = plt.subplots(figsize=(width, height))

ax = df.plot(ax=ax, legend=False)

ax.set_ylabel('Sea surface height (m)')

png = 'mpld3_{}.png'.format(station)

fig.savefig(png, dpi=resolution)

encoded = base64.b64encode(open(png, 'rb').read())

from folium import IFrame

html = '<img src="data:image/png;base64,{}">'.format

iframe = IFrame(html(encoded), width=(width*resolution)+20, height=(height*resolution)+20)

popup = folium.Popup(iframe, max_width=2650)

icon = folium.Icon(color="red", icon="ok")

marker = folium.Marker(location=[lat-2, lon-1], popup=popup, icon=icon)

marker.add_to(m)

m.save('test.html')

预期结果

我的输出

Answer 1

使用folium-0.10.1，您只需修改这一行：encoded&nbsp;=&nbsp;base64.b64encode(open(png,&nbsp;'rb').read())进入encoded&nbsp;=&nbsp;base64.b64encode(open(png,&nbsp;'rb').read()).decode()你得到：