Map of Kotlin Island with Inset

Kotlin Island is situated in the Gulf of Finland and is one of the districts of the city of Saint Petersburg (Russia).

import geopandas as gpd
from shapely.geometry import box

from lets_plot import *

LetsPlot.setup_html()

All Districts of St.Petersburg

# The districts boundaries.
districts_gdf = gpd.read_file("https://raw.githubusercontent.com/JetBrains/lets-plot-docs/master/data/spb_districts.geojson")
districts_gdf.head(3)

	osm_id	geometry
0	1115082	MULTIPOLYGON (((29.54289 60.04227, 29.54305 60...
1	1114193	MULTIPOLYGON (((30.25023 59.90129, 30.25112 59...
2	1114252	MULTIPOLYGON (((30.18468 59.95472, 30.18449 59...

# Kotlin Island bounding box.
kotlin_bbox = [29.63, 59.965, 29.815, 60.035]
kotlin_rect = dict(zip(['xmin', 'ymin', 'xmax', 'ymax'], kotlin_bbox))

p_districts = (ggplot()
    + geom_polygon(map=districts_gdf, color='#a1d99b', fill='#f7fcf5')
    + geom_rect(**kotlin_rect, color='red', alpha=0)
    + geom_text(label='Saint Petersburg', x=30.334445, y=59.934294, size=6)
    + theme_void() + theme(plot_inset=0, plot_background=element_rect(size=1))
)

p_districts + coord_map()

Detailed Map of Kotlin Island

# Tourist attractions with coordinates.
places_gdf = gpd.read_file("https://raw.githubusercontent.com/JetBrains/lets-plot-docs/master/data/kotlin_places.geojson")
places_gdf.head(3)

	name	type	geometry
0	Kronstadt Naval Cathedral	church	POINT (29.77745 59.99174)
1	Kronstadt History Museum	museum	POINT (29.79132 59.98678)
2	Kronstadt Naval Museum	museum	POINT (29.76342 59.99611)

p_kotlin_isl = (ggplot()
    # Zoom-in the map.             
    + coord_cartesian(xlim=kotlin_bbox[0::2], ylim=kotlin_bbox[1::2])
    + geom_polygon(map=districts_gdf, color='#31a354', fill='#e5f5e0')
                
    # Add the points of interest.            
    + geom_point(aes(color='type', shape='type'), data=places_gdf, size=5)
    + geom_text(aes(label='name'), data=places_gdf, hjust='right', nudge_x=-5, nudge_unit='size')

    # Add annotation texts.            
    + geom_text(label='Kotlin Isl.', x=29.725, y=60.011, color='#31a354', size=13, fontface='italic')
    + geom_text(label='Gulf of Finland', x=29.665, y=60.002, color='#578bcc', size=11, fontface='italic')
                
    + theme_void() + theme(
        plot_background=element_rect(fill='#F0F7FE', size=1),
        plot_inset=0,
        legend_title='blank',
        legend_position=[.1, .12],
        legend_background='blank'
    )
)               
p_kotlin_isl

Combining Both Plots in One Figure

(ggbunch([p_kotlin_isl, p_districts],
    regions=[
        (0, 0, 1, 1),
        (0.75, 0, 0.25, 0.37, -10, 10)
    ]) 
  + ggtitle('Tourist Attractions on Kotlin Island')
  + theme(plot_title=element_text(hjust=0.5, face='bold', size=16))
)