Update app.py

app.py

@@ -3,16 +3,26 @@ import pandas as pd
 import matplotlib.pyplot as plt
 
 def plot_graph(file):
-    # Read the CSV file
     df = pd.read_csv(file.name)
-    # Generate a simple plot
-    plt.figure()
-    df.plot()
-    plt.title('Graph of Tabular Data')
-    plt.xlabel('X-axis')
-    plt.ylabel('Y-axis')
+   
+    x_axis = 'Date'
+    y_axis = 'Count'
+    group_label = 'Species'
+
+    df[x_axis] = pd.to_datetime(df[x_axis])
+
+    plt.figure(figsize=(10, 5))
+    for label, group_df in df.groupby(group_label):
+        plt.plot(group_df[x_axis], group_df[y_axis], label=label)
+
+    
+    plt.title(f'{y_axis} of {group_label} over {x_axis}')
+    plt.xlabel(x_axis)
+    plt.ylabel(y_axis)
+    plt.legend(title=group_label)
     plt.grid(True)
-    # Save the plot to a file
+    plt.xticks(rotation=45)
+
     plot_filename = 'plot.png'
     plt.savefig(plot_filename)
     plt.close()