Update app.py

app.py

@@ -5,7 +5,7 @@ import numpy as np
 import pandas as pd
 import os
 from datasets import load_dataset
-
+import matplotlib.pyplot as plt
 
 Secret_token = os.getenv('token')
 
@@ -16,6 +16,10 @@ taraf_info = dataset2.to_pandas()
 cities = taraf_info['City'].unique().tolist()
 min_year = int(taraf_info['Year'].min())
 max_year = int(taraf_info['Year'].max())
+cmap = plt.colormaps['cool']
+def value_to_hex(value):
+    rgba_color = cmap(value)
+    return "#{:02X}{:02X}{:02X}".format(int(rgba_color[0] * 255), int(rgba_color[1] * 255), int(rgba_color[2] * 255))
 
 def subsetEdges(city, year):
   info = taraf_info[(taraf_info['Year'] == year) & (taraf_info['City'] == city)]