-set terminal pngcairo mono size 600,800
+if ( ! exists("mono") ) {
+ set terminal pngcairo color size 600,800
+} else {
+ set terminal pngcairo mono size 600,800
+}
set xdata time
set timefmt "%s"
+set xtics format "%H"
+
set pointsize 0.2
set output '/dev/shm/temp2.png'
+unset border
+
set multiplot
set size 1, 0.5
set origin 0.0, 0.5
-plot "/dev/shm/DS18B20-temperature" using 1:2 with dots title "DS18B20 deg. C","/dev/shm/DHT22-temperature" using 1:($2 > 1 && $2 < 45 ? $2 : '') with dots title "DHT22 deg. C"
+if ( ! exists("t_mean")) {
+
+t_mean=25
+t_spread=25
+
+h_mean = 50
+h_spread = 30
+
+print "using default mean and spread"
+}
+
+min_t = t_mean - t_spread
+max_t = t_mean + t_spread
+
+set ytics nomirror
+set y2tics
+
+plot "/dev/shm/DS18B20-temperature" using ($1+7200):($2 > min_t && $2 < max_t ? $2 : '') with dots title "DS18B20 deg. C" \
+,"/dev/shm/DHT22-temperature" using ($1+7200):($2 > min_t && $2 < max_t ? $2 : '') with dots title "DHT22 deg. C" \
+,"/dev/shm/rtl_433-temperature" using ($1+7200):($2) with dots title "RTL433 deg. C"
set origin 0.0, 0.0
-plot "/dev/shm/DHT22-humidity" using 1:($2 > 3 ? $2 : '') with dots title "DHT22 % hum"
+
+min_h = h_mean - h_spread
+max_h = h_mean + h_spread
+
+plot "/dev/shm/DHT22-humidity" using ($1+7200):($2 > min_h && $2 < max_h ? $2 : '') with dots title "DHT22 % hum" \
+,"/dev/shm/rtl_433-humidity" using ($1+7200):($2) with dots title "RTL433 % hum"
unset multiplot