+ a faq
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Gnuplot - an interactive plotting program
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There is an on-line demo collection at http://gnuplot.info/demo
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% -------------------------------------------------------------------
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\section{Exemple : le phytotron}
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\index{phytotron}
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\begin{verbatim}
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#!/bin/bash
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# THIS IS A KLUDGE
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# THIS IS A KLUDGE
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nbsamp=3000 # nombre d'echantillon
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@ -24,10 +28,6 @@ fi
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DATAFILE="serial/foo.dat"
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IMAGE="graphe.png"
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TMPFILE="/dev/shm/tmpdata"
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echo $nbsamp
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wc -l ${DATAFILE}
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tail -${nbsamp} < ${DATAFILE} > ${TMPFILE}
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gnuplot << __EOC__
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@ -48,6 +48,17 @@ __EOC__
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display ${IMAGE} &
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\end{verbatim}
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% -------------------------------------------------------------------
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\section{Questions}
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Supposons que nous ayons sous le coude un fichier contenant
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\emph{six cent mille} lignes de données, qui ne représentent que
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trente secondes d'enregistrement d'une valeur de Virgo\index{Virgo},
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comment faire pour plotter les échantillons $N$ à $N+42$ ?
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% -------------------------------------------------------------------
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