【python】GeoJson和bokeh-1

版权声明： https://blog.csdn.net/staHuri/article/details/81065454

GeoJson 文档

{
  "type": "FeatureCollection",
  "features": [
    {
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              3,
              1
            ],
            [
              3,
              2
            ],
            [
              4,
              2
            ],
            [
              4,
              1
            ],
            [
              3,
              1
            ]
          ]
        ]
      },
      "type": "Feature",
      "properties": {
        "perimeter": 0,
        "vista": "mim",
        "provincia": "右侧正方形",
        "objectid": 24,
        "prov": 0,
        "bounds": [
          0,
          0
        ],
        "provif3_": 27.0,
        "ogc_fid": 26,
        "provif3_id": 26.0
      }
    },
    {
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [
            [
              1,
              1
            ],
            [
              1,
              2
            ],
            [
              2,
              2
            ],
            [
              2,
              1
            ],
            [
              1,
              1
            ]
          ]
        ]
      },
      "type": "Feature",
      "properties": {
        "perimeter": 0,
        "vista": "mim",
        "provincia": "左侧正方形",
        "objectid": 24,
        "prov": 0,
        "bounds": [
          0,
          0
        ],
        "provif3_": 27.0,
        "ogc_fid": 26,
        "provif3_id": 26.0
      }
    }
  ]
}

from bokeh.io import show, output_notebook, output_file
from bokeh.models import (
    GeoJSONDataSource,
    HoverTool,
    LinearColorMapper
)
from bokeh.plotting import figure
from bokeh.palettes import Viridis6

with open(r'argentina.json', 'r', encoding='utf8') as f:
    geo_source = GeoJSONDataSource(geojson=f.read())

color_mapper = LinearColorMapper(palette=Viridis6)

TOOLS = "pan,wheel_zoom,box_zoom,reset,hover,save"

p = figure(title="正方形", tools=TOOLS, x_range=[1, 10], y_range=[1, 10], width=500, height=500)
p.grid.grid_line_color = None

p.patches('xs', 'ys', fill_alpha=0.7, fill_color={'field': 'objectid', 'transform': color_mapper},
          line_color='white', line_width=0.5, source=geo_source)

hover = p.select_one(HoverTool)
hover.point_policy = "follow_mouse"
hover.tooltips = [("Provincia:", "@provincia")]

output_file("test.html", title="Testing Polygon in bokeh")

show(p)