# Plot temp/humi data as compact strip chart from stdin.

# Title is supplied as:
#     gnuplot -e "title='Multisensor Battery Plot (V)'"
if (!exists("title")) title='data'
# Output filename supplied as:
#     gnuplot -e "outname='foo.png'"
if (!exists("outname")) outname='.noname.png'
# Units (eg C or RH%) supplied as:
#     gnuplot -e "unit='V'"

# Input of form (no column titles):
#1733133443,19.68
#1733133473,19.86
#1733133503,19.95
#1733133534,20.02
#1733133563,20.05

set datafile separator comma

# Input time format is Unix timestamp.
set timefmt "%s"

# Start to draw (PNG) output.
set format x "%y/%m"
set xdata time
set terminal png size 800,200
set output outname
set format y "%g"
if (exists("unit")) set format y "%g".unit
set grid
plot '/dev/stdin' using 1:2 title title with lines