Bangle.js 2 Cutting Edge - new heart rate algorithm

gnuplot -e "load 'plotscript.gnu'"

# 5 = beats
# 6 = confidence
# 7 = hrm.raw=(ppg+offset)*2
# 9 = ppg
# 10 = offset

set datafile separator ","

filename = system("echo 'hrm1.csv'")
first_timestamp = system("awk -F',' 'NR==2 {print $1}' hrm1.csv")

set xlabel 'Time (seconds)'


set ytics nomirror
set ylabel 'ppg'
plot filename using (($1 - first_timestamp) / 1000.0):7 with p title 'raw' axes x1y1

replot filename u (($1 - first_timestamp) / 1000.0):10 with l t 'offset' axes x1y1

set y2tics nomirror
set y2label 'beats'
replot filename using (($1 - first_timestamp) / 1000.0):5 with p title 'beats' axes x1y2

# Pause to keep the plot window open
pause -1