绘制点时不显示地图

Question

I'm trying to plot the points onto a map with geopandas but when I do plot the points the map disappears.

fp = "./nyu_2451_34490/nyu_2451_34490.shp"

map_df = gpd.read_file(fp)

map_df = map_df.to_crs(epsg=4326)

geometry = [Point(x) for x in zip(df['longitude'], df['latitude'])]

gdf = gpd.GeoDataFrame(df, crs = {'init': 'epsg:4326'}, geometry=geometry)

Without the points the map does show up

fig, ax = plt.subplots(figsize=(20, 20))
base = map_df.plot(ax=ax, color='gray')
# gdf.plot(ax=ax, markersize=5)

But when I do

fig, ax = plt.subplots(figsize=(20, 20))
base = map_df.plot(ax=ax, color='gray')
gdf.plot(ax=ax, markersize=5)

Answer 1

If it has longitude and latitude in shape file, how about using scatter to plot the points?

plt.scatter("longitude", "latitude", data=df)

In addition, it looks like the points have different scale or the plot is showing too wide area. Setting the limit of x and y axis may help.

#set_xlim(left, right)
ax.set_xlim(-74.3, -73.6)
#set_ylim(bottom, top)
ax.set_ylim(40.4, 50.0)

Hope this helps.