release du matin, chagrin

chap/gnuplot.tex

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+%
+%	nouveau 27 septembre 2020
+%
+\chapter{Gnuplot}
+\index{Gnuplot}\label{chap:Gnuplot}
+
+\section{Exemple : le phytotron}
+\index{phytotron}
+
+
+\begin{verbatim}
+#!/bin/bash
+
+#           THIS IS A KLUDGE 
+
+nbsamp=3000     # nombre d'echantillon 
+
+if [ $# -eq 1 ]; then
+        nbsamp=$1
+fi
+
+DATAFILE="serial/foo.dat"
+IMAGE="graphe.png"
+TMPFILE="/dev/shm/tmpdata"
+
+echo $nbsamp
+wc -l ${DATAFILE}
+
+tail -${nbsamp} < ${DATAFILE} > ${TMPFILE}
+
+gnuplot << __EOC__
+set term png    size 1600,800
+set output      "${IMAGE}"
+set ytics       2
+set xtics
+set grid        front
+set title       "* Temperatures du Phytotron *"
+set xdata       time
+set timefmt     "%s"
+set format x    "%b %d\n%H:%M"
+set yrange [ 10.0 : 40.0 ]
+plot    "${TMPFILE}" using 1:3 title " inside" with lines, \
+        "${TMPFILE}" using 1:4 title "ambient" with lines
+__EOC__
+
+display ${IMAGE} &
+\end{verbatim}
+
+
+
+