better temperature hourly plot

serial/essai.sh

@@ -10,13 +10,13 @@ NB_READ=5000
 ./t -vv -n ${NB_READ} -d ${DEVICE} | tee -a ${DATAFILE}
 
 gnuplot << __EOC__
-set term png 	size 3200,640
+set term png 	size 4200,640
 set output 	"${IMAGE}"
 set grid
 set title	"Temperature dans le Double Dragon 2"
 set xdata 	time
 set timefmt 	"%s"
-set format x 	"%a, %H:%M:%S"
+set format x 	"%d, %H:%M:%S"
 set yrange [ 0.0 : 30.0]
 plot	"${DATAFILE}" using 1:2 title " foo" with lines, \
 	"${DATAFILE}" using 1:3 title " bar" with lines, \