Maps streamlit

Using Streamlit
1

Hi,
How can i add maps ploted based on geojson data (long and lat) to my streamlit app please?
I need a layer with “zone clim” column

couche = gpd.read_file('C:/Users/xxx/chambre/carte.geojson')
couche.plot(column = 'ZONE_2022' ,cmap = 'cool', legend = True, figsize = (5,5))
plt.title("zones climatiques 2022")
st.map(couche)

CRSError: Invalid projection: epsg:4326: (Internal Proj Error: proj_create: SQLite error on SELECT name, type, coordinate_system_auth_name, coordinate_system_code, datum_auth_name, datum_code, area_of_use_auth_name, area_of_use_code, text_definition, deprecated FROM geodetic_crs WHERE auth_name = ? AND code = ?: no such column: area_of_use_auth_name)
2

Hi @Amira_RIAHI, welcome to the Streamlit community!

In this example, st.map only takes in a dataframe with lat/lon coordinates, whereas you are passing in a plot method. Did you mean to call st.pyplot(couche) instead?

Best,
Randy

3

Double posting:

Help st.map please!

4

Hi randyzwitch,
Thank you,
Yes i tried both st.map and st.pyplot since i need to add a plot with layers to my app :roll_eyes:
I find streamlit quite simple to use except when dealing with geopandas

Regards,

5

As i already wrote, i think this problem is geopandas related.

  • You are running streamlit locally on windows i assume?
  • Which python version?
  • Can you share your code or your geojson file?
6

Hi Franky,
I was trying to update geopandas to see if it will work
i’m using streamlit locally on windows. and my Python version is 3.9.7

Thanks for help,

7

Without seeing actual code or data, i can only guess.
Here is a simple example to load a geojson file with point data and show it on a streamlit app:

df = gpd.read_file('cities.geojson')
df['lon'] = df.geometry.x  # extract longitude from geometry
df['lat'] = df.geometry.y  # extract latitude from geometry
df = df[['lon','lat']]     # only keep longitude and latitude
st.write(df.head())        # show on table for testing only
st.map(df)                 # show on map

Edit: Be aware that with st.map you can only show point data, for other geospatial data you have to use other libraries/elements for example plotly or pydeck and their corresponding streamlit elements:

Chart elements - Streamlit Docs

2 Likes
8

Hi Franky1,
Using pydeck was the solution because i was able to add layers :smiling_face:
Thanks !!

1 Like
9

you also can try streamlit-folium package

package url:

3 Likes
10

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