# Plot 16WW mains voltage for a month.

# Input of form:
#20220523T14:03Z 248.221
#20220523T14:08Z 247.944
#20220523T14:13Z 248.541
#20220523T14:18Z 251.723
#20220523T14:23Z 248.826
#20220523T14:28Z 249.406
#20220523T14:33Z 249.094

set timefmt "%Y%m%dT%H:%MZ"
set datafile missing "-"
set format x "%m/%d"
set xdata time


# Start to draw (PNG) output.
#set terminal png size 640,240
#set terminal png size 640,160
set terminal png small size 720,180
#set terminal png size 800,200
#set terminal png size 1600,400
set output ".work/mainsV.png"
set title "16WW Mains Voltage RMS (V)"
set key off
#set key outside
#set key right
#set key box
#set lmargin 1.5
# Deliberately truncate left-most X-axis label on left as low-information.
#set lmargin 0
#set rmargin 13.5
#set tmargin 0.5
#set bmargin 1.5
set grid xtics y2tics
#set border 0
#set xrange [0.1:12]
#set yrange [0:60]
#set xtics rotate
set format y "%gV"
#set noytics
#unset autoscale y
#set y2tics
#set format y2 "%gV"
set tics scale 3
plot ".work/mainsV.dat" \
        using 1:2 with lines lw 1

## Now create larger image.
#set terminal png size 1280,480
#set output ".work/multisensortempL.png"
#set noytics
##set y2tics 1
#plot for [i=2:8] ".work/multisensortemp.dat" \
#        using 1:(column(i)/16) title columnheader(i) with lines axes x1y2 lw 1