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/usr/bin/convert2osm is in foxtrotgps 1.2.1-1.

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#!/usr/bin/perl
#
# (c) 2008 Marcus Bauer
# License: GPLv2
#
# Convert tangoGPS .csv logfiles into .osm files for processing in JOSM
#
# Usage: ./convert2osm.pl logfiles*.log
#
# creates for each input .log one .osm file
#




$curr_arg = "";

while(<>)
{

	if($curr_arg ne $ARGV)
	{
		if($curr_arg ne "")
		{
			&print_footer;
			close(FD);

			&convert2osm;

		}
		$curr_arg = $ARGV;

		$filename = $ARGV . ".gpx";
		print $filename . "\n";
		open(FD, "> $filename");
		&print_header;
	}

	else
	{
		&print_trackpoint;
	}

}


#--------------------------------
# and the same for the last file:
#--------------------------------
&print_footer;
&convert2osm;


### END MAIN


#########################################################
#
# sub routines
#
#########################################################


#---------
# header
#---------

sub print_header
{
print FD <<EOT
<?xml version="1.0" encoding="UTF-8"?>
<gpx	version="1.0"
	creator="convert2gpx.pl http://www.tangogps.org"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://www.topografix.com/GPX/1/0"
	xsi:schemaLocation="http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd">

<trk>
<trkseg>

EOT
;
}


#-------------
# trackpoint
# ------------

sub print_trackpoint
{
@arr = split(',',$_);
chop @arr[6];


print FD <<EOT
<trkpt lat="@arr[0]" lon="@arr[1]">
  <ele>@arr[2]</ele>
  <speed>@arr[3]</speed>
  <course>@arr[4]</course>
  <fix>3d</fix>
  <hdop>@arr[5]</hdop>
  <time>@arr[6]</time>
</trkpt>

EOT
;
}


#---------
# footer
# --------

sub print_footer
{

print FD <<EOT

</trkseg>
</trk>
</gpx>

EOT
;

}


#=======================================================================
#
# convert 2 osm
#
#=======================================================================


#---------------------------------------------------------------------
#
# MAIN SUB convert to .osm
#
#----------------------------------------------------------------------
sub convert2osm
{

	#
	# 1. simplify with gpsbabel
	#
	`gpsbabel -i gpx -f $filename -x simplify,error=0.001k -x discard,hdop=3.1 -o csv -F $filename.csv`;


	#
	# 2. convert .csv to .osm
	#
	&convert_csv2osm;


	#
	# 3. remove .csv
	#
	`rm $filename.csv`;

}

# END MAIN SUB convert2osm




#----------------
# .csv to .osm
#----------------

sub convert_csv2osm
{

	print "converting to osm...\n";

	$i = 0;

	open(FDCSV,"$filename.csv") || die $filename.csv;
	open(FDOSM,"> $filename.osm") || die $filename.osm;

	&print_header_osm;

	while($_ = <FDCSV>)
	{
		&print_nodes_osm;
	}

	&print_way_osm;

	&print_footer_osm;

	close FDCSV;
	close FDOSM;

}


#----------
# header
#----------

sub print_header_osm
{
print FDOSM "<?xml version='1.0' encoding='UTF-8'?>\n";
print FDOSM "<osm version='0.5' generator='JOSM'>\n";
}



#---------
# nodes
#---------

sub print_nodes_osm
{
	$i--;

	@arr = split(',', $_);
	$lat = $arr[0];
	$lon = $arr[1];
	$lon =~ s/ //;
	print FDOSM "\t<node id='$i' visible='true' lat='$lat' lon='$lon' />\n";
}


#-------
# way
#-------

sub print_way_osm
{
	$way_id = $i - 1;

	print FDOSM "\t<way id='$way_id' action='modify' visible='true'>\n";

	$j = -1;
	for(; $i<0; $i++)
	{
		print FDOSM "\t\t<nd ref='$j' />\n";
		$j--;
	}

}


#----------
# footer
#----------

sub print_footer_osm
{
	print FDOSM "\t\t<tag k='highway' v='residential' /> \n";
	print FDOSM "\t\t<tag k='name' v='nn' /> \n";

	print FDOSM "\t</way> \n";
	print FDOSM "</osm> \n";
}