On 04/12/2007, <b class="gmail_sendername">Martijn van Oosterhout</b> <<a href="mailto:kleptog@gmail.com">kleptog@gmail.com</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
This afternoon I received the datafiles for India/China from AND and<br>I've put up a preview here:<br><br><a href="http://tile.openstreetmap.nl/indchi.html">http://tile.openstreetmap.nl/indchi.html</a></blockquote><div>
<br>Cool! <br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">You need to go to zoom level 9 and above to see the real stuff, but it
<br>seems to have:<br>- Many many placenames, especially in India</blockquote><div><br>All the placenames in China are in their romanised form, does the data have the Chinese names?<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
- Lots of the major regional roads connecting the towns</blockquote><div><br> For China at least, as mentioned previously, the roads are, at best, very very out of date... most expressways (motorways) are missing and the accuracy of the other roads is very low... Does the data have any more details on roads, such as names or references? That would make it easier to try and link them to real data... luckily though, the data is so sparse that merging shouldn't be an issue as long as there's a way to work out what should be linked where...
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">And the real surprise: A reasonable map of Mumbai:<br><a href="http://tile.openstreetmap.nl/indchi.html?lat=19.090588725444515&lon=72.87749427275608&zoom=10">
http://tile.openstreetmap.nl/indchi.html?lat=19.090588725444515&lon=72.87749427275608&zoom=10</a><br><br>There are also lakes and some rivers.</blockquote><div><br>The lakes, rivers and included coastline info looks way off, some of it might have been the way representing a long long time ago, the PGS data for the areas I've looked gives a much more accurate representation of those features... Also, at least one lake I've looked at looks very broken, only seems to have the south west corner of it's coast with the open ends seemingly just joined together to make a small slice of the lake..
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">For the china data there were some encoding issues, I'd appreciate if<br>someone checked that the accents are correct.
</blockquote><div><br>There are only really accent on the romanised forms used in Xinjiang, pinyin, the romanisation of mandarin, can have accents to represent tones, but these don't seem to be present... I can confirm though that the accents on Ürümqi, the capital of Xinjiang look correct, pinyin would be Wulumuqi, or with tones, Wūlǔmùqí, chinese would be 乌鲁木齐.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">At the moment I'm looking for feedback, though we really need people<br>who know the area well to give us an idea of how good it is. And
<br>should contact the existing mappers to ask them how they want this<br>handled. But other than that we're off to a good start I think.</blockquote><div><br>I hope this feedback on the China data is useful... Would be good to see some examples of what data is actually in there... As it stands, the place info in the GNS data looks more detailed, if there's no more info in these files, it would probably be better for me to go back to working on getting that data together, I mostly stopped when we heard about the AND data... Water features seem to be better covered in the places I've looked by PGS. The road data itself seems to be just VMAP0 data...
<br><br>So, unless there is more data in the files that I'm not seeing on the map, we can get the same or better data from other sources with global coverage and that the only benefit to this data is that we already have tools to convert and import it... Would that be an accurate summary?
<br><br>d<br></div><br></div>