#!/bin/bash

if [[ $# != 2 ]]; then
	echo "Usage: $0 <input file> <output file>" >&2
	exit 1
fi

gnuplot << EOF
set terminal jpeg size 800,600 enhanced font "Arial,10"
set output '$2'

# Standard thermal palette
set pm3d map                      # Enables 2D map mode
set palette rgbformulae 33,13,10  # Classic blue-green-red temperature palette
set view map                      # Forces 2D top-down view

set title "Temperature Distribution (degC)"
set xlabel "X Coordinate"
set ylabel "Y Coordinate"
set cblabel "Temperature"         # Colorbar label

# Plot matrix data as an image
plot '$1' matrix with image
EOF