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usrp/range: obtain avg/min/max from a series of values and eliminate outliers
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parent
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49
usrp/range
Executable file
49
usrp/range
Executable file
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#!/usr/bin/perl
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sub usage
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{
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print STDERR "usage: $0 [[-v] tolerance]\n";
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exit(1);
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}
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$tol = 999;
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if (@ARGV) {
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$tol = shift @ARGV;
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if ($tol eq "-v") {
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$verbose = 1;
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$tol = shift @ARGV;
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}
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&usage unless $tol =~ /^[0-9.]+$/;
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&usage if @ARGV;
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}
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while (<>) {
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chop;
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push(@v, $_);
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$s += $_;
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}
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$avg = $s/@v;
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$n = 0;
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for (@v) {
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$n++;
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if ($_ < $avg-$tol || $_ > $avg+$tol) {
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print STDERR "sample $n is outlier: $_\n" if $verbose;
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next;
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}
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$sum += $_;
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$ns++;
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$min = $_ if $_ < $min || !defined $min;
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$max = $_ if $_ > $max || !defined $max;
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}
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if (!$ns) {
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print STDERR "no samples\n";
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exit(1);
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}
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print $sum/$ns, " $min $max\n";
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