graph renamed to btc_graph and changed code to match new database and table name

btc_graph.sh

+#!/bin/bash
+
+# Database credentials
+DB_USER="root"
+DB_PASS="password"
+DB_NAME="crypto_tracker"
+
+# Get today's date in YYYY-MM-DD format
+today=$(date +'%Y-%m-%d')
+
+# Temporary file for storing the data
+temp_file="temp_data.txt"
+
+# Query to get the timestamp and price for today
+mysql -u "$DB_USER" -p"$DB_PASS" -D "$DB_NAME" -e "SELECT UNIX_TIMESTAMP(timestamp), price FROM btc_prices WHERE DATE(timestamp) = '$today' ORDER BY timestamp" > "$temp_file"
+
+# Format the data for gnuplot (remove the first line containing column names)
+tail -n +2 "$temp_file" > "formatted_data.txt"
+
+# Resample the data to get one data point every 2.4 hours (8640 seconds)
+awk 'BEGIN {last_timestamp = 0} {if ($1 - last_timestamp >= 8640) {print $1, $2; last_timestamp = $1}}' formatted_data.txt > "resampled_data.txt"
+
+# Create plots using gnuplot
+gnuplot << EOF
+set terminal pngcairo size 800,600 enhanced font 'Arial,10'
+set output 'price_$today.png'
+set title 'Bitcoin Price vs Time ($today)'
+set xlabel 'Time'
+set ylabel 'Price (USD)'
+
+# Set the time format for the x-axis
+set timefmt "%s"  # Input format is Unix timestamp
+set xdata time    # Use time for the x-axis
+set format x "%H:%M" # Format x axis as hour:minute 
+
+# Use the formatted data
+plot 'formatted_data.txt' using 1:2 with linespoints title 'Price'
+EOF
+
+# Clean up temporary files
+rm "$temp_file" "formatted_data.txt" "resampled_data.txt"
+
+echo "Price graph for today generated successfully!"