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usrp/sps/viz: reject unrecognized command-line options
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usrp/sps/viz
28
usrp/sps/viz
@ -2,7 +2,8 @@
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usage()
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{
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echo "usage: $0 [-f font] prefix frequency" 1>&2
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echo "usage: $0 [-f font] [-m] [-o fft_file] [-p png_file] prefix \
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frequency" 1>&2
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exit 1
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}
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@ -10,30 +11,38 @@ usage()
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font=
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term=
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output=
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show_max=false
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out=
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while true; do
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case "$1" in
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-f) [ "$2" ] || usage
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shift
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font=$1
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shift;;
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font=$1;;
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-m) show_max=true;;
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-o) [ "$2" ] || usage
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shift
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out=$1;;
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-p) [ "$2" ] || usage
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shift
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term="set term png"
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output="set output \"$1\""
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shift;;
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output="set output \"$1\"";;
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-*) usage;;
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*)
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break;;
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esac
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shift
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done
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[ "$2" ] || usage
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[ "$3" ] && usage
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tmp=${out:-_tmp}
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prefix=$1
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f=$2
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../fft -s 100 -d -w hamming 100 <./$prefix-$f >_tmp
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set `./norm _tmp`
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../fft -s 100 -d -w hamming 100 <./$prefix-$f >$tmp
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set `./norm $tmp`
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xm=$1.0 # sample number of y peak
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ym=$2 # magnitude of y peak
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@ -70,8 +79,9 @@ set grid
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set xlabel "MHz from nominal frequency of test wave"
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set style fill solid 1
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plot "_tmp" using ((\$0/$n-0.5)*$span+0.5):(\$1-$ym) with lines notitle, \
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plot "$tmp" using ((\$0/$n-0.5)*$span+0.5):(\$1-$ym) with lines notitle, \
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"<echo -0.9 $ymbar 0.2" with boxes lt $ymbarlt notitle
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EOF
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rm -f _tmp
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[ "$out" ] || rm -f $tmp
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$show_max && echo $ym
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