Update app.py

app.py

@@ -448,9 +448,11 @@ def server(input, output, session):
                 }))
         
         brushed_df_final.with_columns(
-            pl.when(pl.col("Spin").fill_nan(None).is_not_null())
-              .then(pl.col("Spin").cast(pl.Float64).round(0))
-              .otherwise(0)
+            pl.col("Spin")
+              .cast(pl.Float64, strict=False)  # Convert strings to floats, invalid parsing becomes null
+              .fill_nan(None)                  # Convert NaNs to null
+              .fill_null(0)                    # Replace nulls with 0
+              .round(0)                        # Round the valid numeric values
               .alias("Spin")
         )