draw rtl 433mhz data on y2 axis with separate scale

[vaillant-thermostat] / temp2.gnuplot

diff --git a/temp2.gnuplot b/temp2.gnuplot
index 0d4bf08..42c988d 100644 (file)
--- a/temp2.gnuplot
+++ b/temp2.gnuplot
@@ -1,4 +1,4 @@
-set terminal pngcairo mono size 600,800
+set terminal pngcairo color size 600,800
 
 set xdata time
 set timefmt "%s"
@@ -14,10 +14,34 @@ set size 1, 0.5
 
 set origin 0.0, 0.5
 
-plot "/dev/shm/DS18B20-temperature" using ($1+7200):($2 > 3 ? $2 : '') with dots title "DS18B20 deg. C","/dev/shm/DHT22-temperature" using ($1+7200):($2 > 3 && $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" axes x1y2
 
 set origin 0.0, 0.0
 
-plot "/dev/shm/DHT22-humidity" using ($1+7200):($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" axis x1y2
 
 unset multiplot