better temperature hourly plot

viz/gnuplot/av4v-h.awk

@@ -21,7 +21,7 @@ BEGIN	{
 		}
 	else	{
 		val = cumul /compte;	
-		print heures, val;
+		print $1, val;
 		lasthour = heures;
 		cumul = 0;
 		compte = 0;

viz/gnuplot/plot-two.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 INFILE="../../serial/foo.dat"
-NBLINES=50000
+NBLINES=60000
 TMPFILE="/tmp/dd2data.$$"
 IMAGE="av4v-h.png"
 
@@ -14,8 +14,13 @@ set grid
 set title	"Hourly average on the last ${NBLINES} samples"
 set xlabel	"Heures"
 set ylabel 	"Temperature"
-set yrange	[ 5.0 : 30.0]
-plot "${TMPFILE}" with lines
+set yrange	[ 0.0 : 30.0]
+
+set xdata 	time
+set timefmt 	"%s"
+set format x 	"%d, %H:%M"
+
+plot "${TMPFILE}" using 1:2 title "celcius" with lines
 __EOC__
 
 cat -n ${TMPFILE} | tail -20