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<DIV><FONT face=Arial size=2>Shajeer</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>There does seem to be a bit offset between the low
resolution and high satellite images used on the Yahoo layer.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>It would appear that after the import of coastline
data from the PGS script,(which gave a coastline approximately following the low
res imagery) the coastline way has been manually adjusted to fit the
higher resolution imagery.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Without some form of independent verification of
position using GPS tracks its difficult to ascertain which is the more correct.
Though my guess is that the PGS import which tied up to the low res Yahoo
imagery is probably the more correct as 2 independent sources seem to be
in agreement. Unless Yahoo use staring landsat images without doing their
own rectification in which case I guess these might not be 2 independent
sources</FONT></DIV>
<DIV><FONT face=Arial size=2> </FONT></DIV>
<DIV><FONT face=Arial size=2>I've not noticed this sort of offset anywhere
else</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>David</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mikel_maron@yahoo.com href="mailto:mikel_maron@yahoo.com">Mikel
Maron</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=talk-in@openstreetmap.org
href="mailto:talk-in@openstreetmap.org">talk-in@openstreetmap.org</A> ; <A
title=talk@openstreetmap.org
href="mailto:talk@openstreetmap.org">talk@openstreetmap.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, August 22, 2008 5:13
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [OSM-talk] [Talk-in]
Coastline changes at different zoom withyahoo map</DIV>
<DIV><BR></DIV>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif">
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif">There's
possibly inaccuracies in the original coastlines. <BR>I'd suggest
reading about how coastlines are handled (<A
href="http://wiki.openstreetmap.org/index.php/Coastline">http://wiki.openstreetmap.org/index.php/Coastline</A>)<BR>and
then making an inquiry to the main <A
href="mailto:dev@openstreetmap.org">dev@openstreetmap.org</A>
list.<BR><BR>-Mikel<BR><BR><BR>
<DIV style="FONT-SIZE: 10pt; FONT-FAMILY: arial,helvetica,sans-serif">-----
Original Message ----<BR>From: Shajeer Mohammed <<A
href="mailto:shajeer@hotmail.com">shajeer@hotmail.com</A>><BR>To: <A
href="mailto:talk-in@openstreetmap.org">talk-in@openstreetmap.org</A>; <A
href="mailto:talk@openstreetmap.org">talk@openstreetmap.org</A><BR>Sent:
Thursday, August 21, 2008 10:50:03 PM<BR>Subject: [Talk-in] Coastline changes
at different zoom with yahoo map<BR><BR>I haven noticed the same coastline
when compared at different zoom levels <BR>are having an offset when compared
to the yahoo satellite maps.<BR><BR><BR><A
href="http://www.openstreetmap.org/edit?lat=11.85657&lon=75.35504&zoom=15"
target=_blank>http://www.openstreetmap.org/edit?lat=11.85657&lon=75.35504&zoom=15</A>
- <BR>Modified coastline which shows the city roads and coastlines
aligned<BR><A
href="http://www.openstreetmap.org/edit?lat=11.85657&lon=75.35504&zoom=13-"
target=_blank>http://www.openstreetmap.org/edit?lat=11.85657&lon=75.35504&zoom=13-</A>
Orginal <BR>PSG coastline my changes are shown with an offeset<BR><BR>Has
anyone else noticed this? Or am I doing something wrong
here?<BR><BR><BR>Regards<BR>Shajeer<BR><BR><BR><BR><BR><BR>_______________________________________________<BR>Talk-in
mailing list<BR><A href="mailto:Talk-in@openstreetmap.org"
ymailto="mailto:Talk-in@openstreetmap.org">Talk-in@openstreetmap.org</A><BR><A
href="http://lists.openstreetmap.org/listinfo/talk-in"
target=_blank>http://lists.openstreetmap.org/listinfo/talk-in</A><BR></DIV></DIV></DIV>
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