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>
>>>>>>>>>> >
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>