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Full Discussion: Linear Interpolation of CSV Columnar Data
Top Forums Shell Programming and Scripting Linear Interpolation of CSV Columnar Data Post 303038319 by hrrruser on Friday 30th of August 2019 09:53:44 AM
Old 08-30-2019
Thank you! This is exactly what I was looking for.

Quote:
Originally Posted by rdrtx1
try:
Code:
awk -F, '
   function interpolate(lat1, lon1, t1, lat2, lon2, t2, p) {
       for (i = 1; i <= (t2 - t1); i++) {
           printf "%.2f,%.2f,%.1f\n",
              lat1 + (t2 - t1) * (lat2 - lat1) / p,
              lon1 + (t2 - t1) * (lon2 - lon1) / p,
              t1 + i * (t2 - t1) / p
       }
   }
   NR >= 2 {interpolate(lat, lon, t, $1, $2, $3, ++p); p=0;}
   {lat = $1; lon = $2; t = $3; ++p}
   {print}
' file.in.csv > file.out.csv

 

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LEARN ABOUT DEBIAN

rdf::trine::exporter::csv

RDF::Trine::Exporter::CSV(3pm)				User Contributed Perl Documentation			    RDF::Trine::Exporter::CSV(3pm)

NAME

       RDF::Trine::Exporter::CSV - Export RDF data to CSV

VERSION

       This document describes RDF::Trine::Exporter::CSV version 1.000

SYNOPSIS

	use RDF::Trine::Exporter::CSV;

DESCRIPTION

       The RDF::Trine::Exporter::CSV class provides an API for serializing RDF data to CSV strings and files.

METHODS

       "new ( sep_char => $sep_char, quote => $bool )"
	   Returns a new RDF::Trine::Exporter::CSV object. If $sep_char is provided, it is used as the separator character in CSV serialization,
	   otherwise a comma (",") is used.

       "serialize_iterator_to_file ( $file, $iterator )"
	   Serializes the bindings objects produced by $iterator, printing the results to the supplied filehandle "<$fh">.

       "serialize_iterator_to_string ( $iterator )"
	   Serializes the bindings objects produced by $iterator, returning the result as a string.

BUGS

       Please report any bugs or feature requests to through the GitHub web interface at <https://github.com/kasei/perlrdf/issues>.

AUTHOR

       Gregory Todd Williams  "<gwilliams@cpan.org>"

COPYRIGHT

       Copyright (c) 2006-2012 Gregory Todd Williams. This program is free software; you can redistribute it and/or modify it under the same terms
       as Perl itself.

perl v5.14.2							    2012-06-29					    RDF::Trine::Exporter::CSV(3pm)
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