Katpatuka/CDC email traffic
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On Fri, 18 Jan 2013 15:57:28 +0200, Shuming Bao <sbao@umich.edu> wrote: > Hi, Roman: > > As I mentioned in my previous email, our boundary map is developed as a > research reference for matching Census data instead of official maps. The > Chinese gov't also only allows a resolution less than 1: 1 million for > international users. Our map is based on the official one. We made some > changes on those updated county/district boundaries based on the > available > information we can found. > > Best > > Shuming > > On Fri, Jan 18, 2013 at 4:01 AM, Roman Neumüller > <email@katpatuka.org>wrote: > >> Hello Shuming, >> >> Thank you very much! >> >> At first glance the boundaries seem to be the same as the boundaries >> one could once find at http://nfgis.nsdi.gov.cn/ but being corrected >> at some places to reflect changes mainly in metropolitan areas, refined >> in detail along rivers or to show newly created counties or just wrong >> boundaries (for example 荆州区, 沙市区, and 江陵县 in 荆州市). >> >> The data is not bad but along rivers I see that it's still too rough >> (see border of 松滋市 near 红岩河 where OSM's data is already more >> detailed) >> ;-) >> >> Anyway we will use the data of CDC and refine the borders slowly in >> time... >> the source tag will be "China Data Center, University of Michigan". >> >> Thank you very much again >> >> Greetings >> Roman Neumüller (katpatuka@osm) >> >> Hi, Roman: >>> >>> I may have forgot this. Attached is the compressed county GIS map for >>> 2000. >>> You may give its credit to >>> China Data Center, University of Michigan >>> >>> Best >>> >>> Shuming >>> >>> On Wed, Jan 9, 2013 at 4:36 AM, Roman Neumüller <email@katpatuka.org> >>> wrote: >>> >>> Is any form which need to be signed (such as how those maps can be >>>> >>>>> used or shared)? >>>>> >>>>> >>>> No, not from our side >>>> You just have to understand the copyright of OSM ( >>>> http://osm.org/copyright >>>> ) >>>> and have to decide if CDO can give us the data. >>>> >>>> Best >>>> Roman >>>> >>>> On Fri, 04 Jan 2013 18:35:38 +0200, Shuming Bao <sbao@umich.edu> >>>> wrote: >>>> >>>> On Fri, Jan 4, 2013 at 3:55 AM, Roman Neumüller <email@katpatuka.org> >>>> >>>>> wrote: >>>>> >>>>> Thanks a lot Shuming! >>>>>> >>>>>> Some questions: >>>>>> * Is the map in form of a shapefile? >>>>>> >>>>>> Shape file >>>>> >>>>> * Do I have to subscribe to get the link? >>>>>> >>>>>> We can send you the original data file >>>>> >>>>> * How can we credit CDO? >>>>>> >>>>>> You may give credit to the University of Michigan China Data Center >>>>> >>>>> * Is the datum of the shapefile WGS84 or UTM? >>>>>> >>>>>> WGS84 >>>>> >>>>> >>>>> Best >>>> >>>>> >>>>> Shuming >>>>> >>>>> >>>>> By the way: I downloaded the free provinces shapefile (1) and noted >>>>>> that >>>>>> Chongqing is missing. Opening the shapefile using GTM (2) suggests >>>>>> WGS84 datum but I would have to manually enter lat and lon values of >>>>>> the >>>>>> grid scale. >>>>>> >>>>>> Roman >>>>>> >>>>>> (1) http://chinadatacenter.org/****Data/FreeDataContent.aspx?id=*** >>>>>> *104 >>>>>> <http://chinadatacenter.org/**Data/FreeDataContent.aspx?id=**104> >>>>>> <http://chinadatacenter.**org/Data/FreeDataContent.aspx?**id=104<http://chinadatacenter.org/Data/FreeDataContent.aspx?id=104> >>>>>> > >>>>>> (2) http://www.trackmaker.com/ >>>>>> >>>>>> Hi, Roman: >>>>>> >>>>>>> >>>>>>> We'll be happy to share our 2000 county boundary map with OSM so >>>>>>> that >>>>>>> other users can also benefit from it. Our 2000 county map was >>>>>>> developed to match China 2000 county Census data as a research >>>>>>> reference map. >>>>>>> >>>>>>> Best >>>>>>> >>>>>>> Shuming >>>>>>> >>>>>>> On Thu, Jan 3, 2013 at 3:44 AM, Roman Neumüller >>>>>>> <email@katpatuka.org> >>>>>>> wrote: >>>>>>> >>>>>>> >>>>>>>> Hello Shuming, >>>>>>>> >>>>>>>> Thanks for your reply... ;-) >>>>>>>> >>>>>>>> OSM is generally interested in all kind of boundary data for all >>>>>>>> kinds >>>>>>>> of >>>>>>>> divisions of all countries. Some country authorities even supplied >>>>>>>> their >>>>>>>> official data to OSM (Netherlands, Germany). If you look at the >>>>>>>> OSM >>>>>>>> map >>>>>>>> of >>>>>>>> China you can see that their are still a lot of boundaries >>>>>>>> missing - >>>>>>>> only >>>>>>>> provinces are finished but prefecture boundaries and county >>>>>>>> boundaries >>>>>>>> are >>>>>>>> mostly missing because there isn't any official data available in >>>>>>>> any >>>>>>>> form >>>>>>>> (say shapefiles). The only sources I've used up to now are sites >>>>>>>> like >>>>>>>> maplibrary.org or gadm.org - the latter providing shapefiles for >>>>>>>> 3rd >>>>>>>> divisions even but comparing them to other sources (wikipedia for >>>>>>>> example) >>>>>>>> I'm really not sure if they are correct. >>>>>>>> >>>>>>>> Since mapping China seems to be sort-of forbidden in China >>>>>>>> (chinese >>>>>>>> GPS >>>>>>>> devices seem to have a built-in offset and even google maps do >>>>>>>> have >>>>>>>> an >>>>>>>> offset compared to satellite view) I suppose their will never be >>>>>>>> any >>>>>>>> official data available from chinese authorities anyway. Their >>>>>>>> aren't >>>>>>>> many >>>>>>>> contributors from China itself too on OSM... >>>>>>>> >>>>>>>> I can say that to get shapefiles for county boundaries would >>>>>>>> really >>>>>>>> be >>>>>>>> a >>>>>>>> great step forward! >>>>>>>> >>>>>>>> So if CDO has anything to share which fits with OSM's ODbL (Open >>>>>>>> Data >>>>>>>> Commons Open Database License) it would be greatly appreciated ;-) >>>>>>>> >>>>>>>> Cheers >>>>>>>> Roman >>>>>>>> >>>>>>>> Dear Roman: >>>>>>>> >>>>>>>>> >>>>>>>>> Those boundary maps of China were developed by our partners for >>>>>>>>> research reference instead of official maps. What map you are >>>>>>>>> interested in? >>>>>>>>> >>>>>>>>> Best >>>>>>>>> >>>>>>>>> Shuming >>>>>>>>> >>>>>>>>> On Wed, Jan 2, 2013 at 7:26 AM, Roman Neumüller < >>>>>>>>> email@katpatuka.org> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>> >>>>>>>>>> >>>>>>>>>> Hello, >>>>>>>>>> >>>>>>>>>> I just stumbled upon a link in the english wikipedia pointing to >>>>>>>>>> the >>>>>>>>>> Geo >>>>>>>>>> Explorer on http://chinadataonline.org and saw that you are >>>>>>>>>> using >>>>>>>>>> openstreetmap (OSM) as default layer - nice! ;-) >>>>>>>>>> >>>>>>>>>> Since I'm one of the crazy mappers editing China on OSM having a >>>>>>>>>> hard >>>>>>>>>> time >>>>>>>>>> to find publicly accessable boundary data of administrative >>>>>>>>>> divisions >>>>>>>>>> of >>>>>>>>>> China, I wonder if CDO _has_ data which would comply with OSM's >>>>>>>>>> ODbL >>>>>>>>>> data >>>>>>>>>> license (1) and would be able to provide it to OSM. >>>>>>>>>> >>>>>>>>>> On first glance I did not find any page explaining the usage >>>>>>>>>> policy/copyright status of CDO. >>>>>>>>>> >>>>>>>>>> _If_ it would be possible to use CDO's data I would like to >>>>>>>>>> subscribe >>>>>>>>>> to >>>>>>>>>> your services. >>>>>>>>>> >>>>>>>>>> Sincerely >>>>>>>>>> Roman Neumüller >>>>>>>>>> >>>>>>>>>> (1) >>>>>>>>>> http://www.openstreetmap.org/****copyright<http://www.openstreetmap.org/**copyright> >>>>>>>>>> <http://www.**openstreetmap.org/copyright<http://www.openstreetmap.org/copyright> >>>>>>>>>> > >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >