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16 lines
298 B
Plaintext
16 lines
298 B
Plaintext
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#!/bin/sh
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if [ -z "$1" ]; then
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echo "usage: $0 file" 1>&2
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exit 1
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fi
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if [ ! -f "$1" ]; then
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echo "$1: not found" 1>&2
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exit 1
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fi
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gnuplot -persist <<EOF
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set xlabel "MHz"
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set ylabel "dB"
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set yrange [-30:-20]
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plot "<sed '\$d' $1" using (\$1):(log(\$3)/log(10)*10) with lines notitle
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EOF
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