(Looking back at all this about twenty years later: what a privacy nightmare!!)
I started digging more into FOAF ¹ and RDF ².
FoafGeoGraph will start with my FOAF file, print my position, and then it will go through all the people I know, and print their position, or if the info is not available, but I have a FOAF file for them, it will fetch their FOAF file file and try to find the position in there.
Oh and let me tell you, getting the RDF stuff right in code as bad as I expected it to be. UGH!!!
Here’s a sample run, with verbose output to show you how it spiders foaf files and with two degrees.
/home/alex/src/foaf-map $ perl foaf-geo-graph.pl -v -d 2 http://www.emacswiki.org/cgi-bin/alex/download/FOAF munging http://www.emacswiki.org/cgi-bin/alex/download/FOAF Alex Schroeder 47.3787, 8.5273 Alex Schroeder knows Johan Adler no location Default name: Johan Adler munging http://nyfiken.org/foaf.rdf Johan Adler 59.1990, 18.0681 Johan Adler knows Larisa Adler no location Default name: Larisa Adler munging http://larisa.nyfiken.org/foaf.rdf http://larisa.nyfiken.org/foaf.rdf is not a FOAF file: Can't find FOAF file Johan Adler knows Marianne Gripman no location Johan Adler knows Ingemar Gripman no location Johan Adler knows Helena Gripman no location Default name: Helena Gripman munging http://helena.gripman.se/filer/foaf.rdf http://helena.gripman.se/filer/foaf.rdf is not a FOAF file: Can't find FOAF file Johan Adler knows Rye Widell no location Johan Adler knows Peter Lindberg no location Default name: Peter Lindberg munging http://tesugen.com/foaf.rdf http://tesugen.com/foaf.rdf is not a FOAF file: not well-formed (invalid token) at line 60, column 12, byte 1936 at /usr/lib/perl5/XML/Parser.pm line 187 Johan Adler knows Alex Schroeder no location Johan Adler knows Håkan Kjellerstrand no location Default name: Håkan Kjellerstrand munging http://www.hakank.org/foaf.rdf Hakan Kjellerstrand 55.5968, 13.0016 Johan Adler knows Martin Rundkvist no location Alex Schroeder knows Sascha Brawer no location Default name: Sascha Brawer munging http://www.brawer.ch/foaf.rdf Sascha Brawer 46.9553, 7.4282 Sascha Brawer knows Alex Schroeder no location found http://www.emacswiki.org/cgi-bin/alex/download/FOAF again, skipping Sascha Brawer knows Patrik Reali no location Default name: Patrik Reali munging http://www.reali.ch/foaf.rdf Patrik Reali no location found in http://www.reali.ch/foaf.rdf, skipping Alex Schroeder knows Sacha Chua no location Default name: Sacha Chua munging http://sacha.free.net.ph/notebook/xml/foaf.rdf http://sacha.free.net.ph/notebook/xml/foaf.rdf is not a FOAF file: invalid attribute at line 35 at /usr/local/share/perl/5.8.3/RDF/Core/Parser.pm line 718 Alex Schroeder knows Christophe Ducamp no location Default name: Christophe Ducamp munging http://www.elanceur.org/ChristopheDucamp/FoafXtof.rdf Christophe Ducamp 49.2728, 1.6159 Christophe Ducamp knows Heather James no location Default name: Heather James munging http://peopleaggregator.com/profile?id=524 heather no location found in http://peopleaggregator.com/profile?id=524, skipping Christophe Ducamp knows Mattis Manzel no location Default name: Mattis Manzel munging http://mitglied.lycos.de/terrahome/foaf.rdf http://mitglied.lycos.de/terrahome/foaf.rdf is not a FOAF file: duplicate attribute at line 5, column 6, byte 184 at /usr/lib/perl5/XML/Parser.pm line 187 Christophe Ducamp knows Alex Schroeder no location found http://www.emacswiki.org/cgi-bin/alex/download/FOAF again, skipping Christophe Ducamp knows Bayle Shanks no location Default name: Bayle Shanks munging http://bshanksserver.dyndns.org/bshanks/foaf.rdf Bayle Shanks no location found in http://bshanksserver.dyndns.org/bshanks/foaf.rdf, skipping Christophe Ducamp knows Sébastien Paquet no location Default name: Sébastien Paquet munging http://topicexchange.com/foaf/21 Sebastien Paquet no location found in http://topicexchange.com/foaf/21, skipping Christophe Ducamp knows Lion Kimbro no location Default name: Lion Kimbro munging http://speakeasy.org/~lion/foaf.rdf Lion Kimbro 47.7166, -122.29501 Alex Schroeder knows Lion Kimbro no location found http://speakeasy.org/~lion/foaf.rdf again, skipping Alex Schroeder knows Mattis Manzel no location Default name: Mattis Manzel munging http://mitglied.lycos.de/terrahome/foaf.rdf http://mitglied.lycos.de/terrahome/foaf.rdf is not a FOAF file: duplicate attribute at line 5, column 6, byte 184 at /usr/lib/perl5/XML/Parser.pm line 187 Alex Schroeder knows Bayle Shanks no location Default name: Bayle Shanks munging http://bshanksserver.dyndns.org/bshanks/foaf.rdf Bayle Shanks no location found in http://bshanksserver.dyndns.org/bshanks/foaf.rdf, skipping 1. xplanet marker file generated by foaf-geo-graph.pl 55.5968 13.0016 "Hakan Kjellerstrand" 49.2728 1.6159 "Christophe Ducamp" 46.9553 7.4282 "Sascha Brawer" 59.1990 18.0681 "Johan Adler" 47.7166 -122.29501 "Lion Kimbro" 47.3787 8.5273 "Alex Schroeder" 1. xplanet arcs file generated by foaf-geo-graph.pl 1. from Christophe Ducamp to Lion Kimbro 49.2728 1.6159 47.7166 -122.29501 1. from Johan Adler to Hakan Kjellerstrand 59.1990 18.0681 55.5968 13.0016 1. from Alex Schroeder to Christophe Ducamp 47.3787 8.5273 49.2728 1.6159 1. from Alex Schroeder to Sascha Brawer 47.3787 8.5273 46.9553 7.4282 1. from Alex Schroeder to Johan Adler 47.3787 8.5273 59.1990 18.0681
Here’s the xplanet setup we need:
`~/.xplanet/config/alex` – getting the cloud map can be tricky. See XPlanetSetup for more. If you don’t have a cloud map, just remove this line.
[earth] marker_file=foaf-markers arc_file=foaf-arcs cloud_map=clouds_2048.jpg
`~/.xplanet/markers/foaf-markers` – copy the appropriate section from the output of the script.
# xplanet marker file generated by foaf-geo-graph.pl 55.5968 13.0016 "Hakan Kjellerstrand" 49.2728 1.6159 "Christophe Ducamp" 46.9553 7.4282 "Sascha Brawer" 59.1990 18.0681 "Johan Adler" 47.7166 -122.29501 "Lion Kimbro" 47.3787 8.5273 "Alex Schroeder"
`~/.xplanet/arcs/foaf-arcs` – copy the appropriate section from the output of the script.
# xplanet arcs file generated by foaf-geo-graph.pl # from Christophe Ducamp to Lion Kimbro 49.2728 1.6159 47.7166 -122.29501 # from Johan Adler to Hakan Kjellerstrand 59.1990 18.0681 55.5968 13.0016 # from Alex Schroeder to Christophe Ducamp 47.3787 8.5273 49.2728 1.6159 # from Alex Schroeder to Sascha Brawer 47.3787 8.5273 46.9553 7.4282 # from Alex Schroeder to Johan Adler 47.3787 8.5273 59.1990 18.0681
And finally, run xplanet:
xplanet -config alex -latitude=47.3787 -longitude=8.5273 \
-projection=rectangle -geometry=1024x512 \
-num_times 1 -output=output.jpg
Here is a sample output file:
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Note to self when editing http://rdfweb.org/topic/Tools, my id is 1089552262.34.22858.
