perms

scripts/testvol.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+# Connect to the database and extract the data
+sqlite3 birds.db <<EOF | while IFS='|' read -r id mean_volume recorded_at; do
+.mode csv
+.headers off
+SELECT id, mean_volume, strftime('%Y-%m-%d %H:00:00', recorded_at) AS hour
+FROM volume;
+done | {
+
+  # Initialize variables for the first hour
+  current_hour=""
+  total_volume=0
+  count=0
+
+  # Loop through each row of data
+  while IFS='|' read -r id mean_volume hour; do
+    if [[ "$hour" != "$current_hour" ]]; then
+      # If we've moved on to a new hour, output the previous hour's data
+      if [[ "$current_hour" != "" ]]; then
+        echo "$id|$((total_volume/count))|$current_hour"
+      fi
+      # Reset the variables for the new hour
+      current_hour="$hour"
+      total_volume="$mean_volume"
+      count=1
+    else
+      # If we're still in the same hour, add to the total and count
+      total_volume="$((total_volume + mean_volume))"
+      count="$((count + 1))"
+    fi
+  done
+
+  # Output the final hour's data
+  echo "$id|$((total_volume/count))|$current_hour"
+}
+
+EOF