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<div class=Section1>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'>I started cleaning up around the <st1:City w:st="on">San
Francisco</st1:City> area a week ago in preparation for the Where 2.0
conference (<st1:City w:st="on">Burlingame</st1:City>: May 12<sup>th</sup>-
14<sup>th</sup>) and WhereCamp (<st1:place w:st="on"><st1:City w:st="on">Mountain
View</st1:City></st1:place>: May 17<sup>th</sup> – 18<sup>th</sup> ).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'>I have found that a lot can be done from a distance
using only tiger data and the yahoo photography. So far I have focused work onto
the coastline, the airport the freeways and then on <a
href="http://openstreetmap.org/?lat=37.5452&lon=-122.2566&zoom=14&layers=0BFT">Foster
City</a> (near <st1:City w:st="on"><st1:place w:st="on">Burlingame</st1:place></st1:City>)
and the area around the <a
href="http://openstreetmap.org/?lat=37.42511&lon=-122.08164&zoom=15&layers=0BFT">GooglePlex</a>.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'>The Freeways need someone with experience because currently
the tiger data is single carriageway and it needs to be expanded to dual
carriageway. I have found the best way is to first add another carriageway
using Potlatch linking the new carriageway into all the entrances and exits along
the way and then snip off the last sections of entrances and exits to the far
carriageway using JOSM (I don’t know how to do that bit in Potlatch).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'>The other area where experience and confidence helps
is where there is data that predates the tiger and to decide what to keep and what
to delete. In some areas the freeways have already been entered as
dual-carriageways so it can make sense to keep them and deleted the tiger data,
but in most other situations the tiger data is likely to be better because it
will link to all the side roads.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'>Does anyone else feel like joining me? I would
suggest that the initial focus is the area to the west of <st1:PlaceName w:st="on">San
Francisco</st1:PlaceName> <st1:PlaceType w:st="on">Bay</st1:PlaceType> between
<st1:City w:st="on">San Francisco</st1:City> itself and <st1:City w:st="on"><st1:place
w:st="on">Sunnyvale</st1:place></st1:City>. Just choose a random spot to start
and work outwards and let’s see how it goes. For anyone who hasn’t
tried it yet, rectifying Tiger data is more compulsive that Sudoku! <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'>Btw, if anyone knows what is going on in <a
href="http://openstreetmap.org/?lat=37.4244&lon=-122.0301&zoom=13&layers=B0FT">the
bay just north of Mountain View and the Googleplex</a> then please do some
suitable tagging. There seem to be loads of shallow ponds with weird colours
(particularly weird on <a
href="http://maps.google.co.uk/?ie=UTF8&t=k&ll=37.459735,-122.028065&spn=0.067586,0.141964&z=13">google
aerial photography</a>). I have tagged them as ‘natural’ and ‘water’
but I don’t think it is really natural and it might not even be water!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Tahoma><span lang=EN-GB style='font-size:
10.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt'>Peter Miller</span></font><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoBodyText><font size=1 face=Tahoma><span lang=EN-GB
style='font-size:9.0pt;line-height:120%'><o:p> </o:p></span></font></p>
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