#!/usr/bin/env gnuplot
# Data from stdin, .png to stdout.
#
# Plot output of occLRH script consisting of space-separated columns of:
# ISOtimestamp occupancy(%) light(%) RH%
#
# 2014-12-29T17:43:41Z 9 - -
# 2014-12-29T17:47:41Z - 12.5625 -
# 2014-12-29T17:55:41Z 0 - -
# 2014-12-29T17:55:41Z - - 12
#
# Assumed usually intra-day, so hours more useful than date.
# 
set timefmt "%Y-%m-%dT%H:%M:%SZ"
# Could select more detailed timestamp for intra-day data periods.
#set format x "%H"
set format x "%d"
#set format x "%m/%d"
set xdata time
#set terminal dumb
set terminal png size 1280,480
#set output ".work/valveAndTemps.L.out.png"
set title "Occupancy vs RH%"
#set key outside
#set key right
set key left
#set lmargin 1.5
#set lmargin 0
#set rmargin 13.5
#set tmargin 0.5
#set bmargin 1.5
#set grid xtics y2tics
#set border 0
set yrange [0:100]
set noytics
set y2tics
set format y "%g%%"
set format y2 "%g%%"
#set tics scale 3
plot "/proc/self/fd/0" \
        using 1:2 title "Occ" with lines axes x1y1 lw 1, \
     "" using 1:3 title "RHOcc" with points axes x1y2 lw 1, \
     "" using 1:4 title "RH%" with lines axes x1y2 lw 2