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Top Forums Shell Programming and Scripting Perl for comparing numbers from previous lines in a file? Post 302876123 by Chubler_XL on Thursday 21st of November 2013 10:00:15 PM
Old 11-21-2013
How about:

Code:
my $file = "$WORK_DIR/tmpdata.asc";

open my $info, $file or die "Could not open $file: $!";
my %line;
local @ARGV = ($file);
my @temps;

while ( <$info> ) {
        my $x1 = $_;
        my @cols = split(" ", $x1);

        if(@temps &&
            abs(@cols[3] - eval(join("+", @temps)) / @temps) > 0.5) {
            print "@cols\n"
        } else {
            shift(@temps) if (@temps > 3);
            push(@temps, @cols[3]);
        }
}

close $info;

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valac(1)							       Vala								  valac(1)

NAME
valac - compiler that translates Vala source code into C source and header files SYNOPSIS
valac [OPTION]... [FILE]... DESCRIPTION
Vala is a new programming language that aims to bring modern programming language features to GNOME developers without imposing any additional runtime requirements and without using a different ABI compared to applications and libraries written in C. valac, the Vala compiler, is a self-hosting compiler that translates Vala source code into C source and header files. It uses the GObject type system to create classes and interfaces declared in the Vala source code. OPTIONS
--help --vapidir=DIRECTORY... Look for package bindings in DIRECTORY --girdir=DIRECTORY... Look for .gir files in DIRECTORY --metadatadir=DIRECTORY... Look for GIR .metadata files in DIRECTORY --pkg=PACKAGE... Include binding for PACKAGE --vapi=FILE Output VAPI file name --library=NAME Library name --gir=NAME-VERSION.gir GObject-Introspection repository file name -b, --basedir=DIRECTORY Base source directory -d, --directory=DIRECTORY Output directory --version Display version number --api-version Display API version number -C, --ccode Output C code -H, --header=FILE Output C header file --use-header Use C header file --includedir=DIRECTORY Directory used to include the C header file -h, --internal-header=FILE Output internal C header file --internal-vapi=FILE Output vapi with internal api --symbols=FILE Output symbols file -c, --compile Compile but do not link -o, --output=FILE Place output in file FILE -g, --debug Produce debug information --thread Enable multithreading support --enable-mem-profiler Enable GLib memory profiler -D, --define=SYMBOL... Define SYMBOL --main=SYMBOL... Use SYMBOL as entry point --nostdpkg Do not include standard packages --disable-assert Disable assertions --enable-checking Enable additional run-time checks --enable-deprecated Enable deprecated features --enable-experimental Enable experimental features --disable-warnings Disable warnings --fatal-warnings Treat warnings as fatal --enable-experimental-non-null Enable experimental enhancements for non-null types --cc=COMMAND Use COMMAND as C compiler command -X, --Xcc=OPTION... Pass OPTION. to the C compiler --dump-tree=FILE Write code tree to FILE --save-temps Keep temporary files --profile=PROFILE Use the given profile instead of the default -q, --quiet Do not print messages to the console -v, --verbose Print additional messages to the console --target-glib=MAJOR.MINOR Target version of glib for code generation --enable-version-header Write vala build version in generated files --disable-version-header Do not write vala build version in generated files FEATURES
Interfaces, properties, signals, foreach, lambda expressions, type inference for local variables, generics, non-null types, assisted memory management, exception handling HOMEPAGE AND BUG REPORT
http://www.vala-project.org/ AUTHORS
Jurg Billeter, Raffaele Sandrini. Man page written to conform with Debian by Marc-Andre Lureau. vala-0.8.0 13 April 2010 valac(1)
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