app.py

import streamlit as st
import pandas as pd
import plotly.express as px

# Function to plot the map
def plot_map(data):
    fig = px.choropleth(locations=data['State'], locationmode="USA-states", color=data['Revenue'],
                        scope="usa", title="Top Corporations by State in the United States",
                        hover_name=data['Corporation'], hover_data=['Revenue'])
    return fig

# Streamlit app
st.title('Top Corporations by State in the United States')

# Upload CSV
uploaded_files = st.file_uploader("Choose a CSV file", accept_multiple_files=True, type="csv")

# Display map button
display_map_button = st.button('Display Map of CSV Data 🗺️')

# If button is clicked, use uploaded files to generate maps or use the default CSV file
if display_map_button:
    if uploaded_files:
        for uploaded_file in uploaded_files:
            data = pd.read_csv(uploaded_file)
            st.write(f"Map for {uploaded_file.name}")
            st.plotly_chart(plot_map(data))
    else:
        # Use the default CSV file if no files are uploaded
        data = pd.read_csv('corporations_data.csv')
        st.plotly_chart(plot_map(data))