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Questions tagged [china]

Use this tag for Questions which are specific to the country of China

29
votes
3answers
643 views

Map material from china not allowed to leave the country

I just read an article about a company in germany which tests autonomous driving cars in different countries. They state that they analyze all of the generated data in germany - with one exception: ...
0
votes
1answer
82 views

Conversion of elevation from Wusong Datum to Chinese 1985 National Datum to WGS84

I want to combine/compare raster data from a digital elevation model (EarthEnv-DEM90) with surface water level data from China. Unfortunately the water level data is given in a vertical Datum with ...
2
votes
0answers
40 views

How to tag address in China

In China address is usually like: No.few homes, building number, which unit or: No.23,Unit 2,Bldg.1 47th Yard, Fengchan Road Jinshui District Does OSM support this operation?
2
votes
1answer
403 views

Which projected coordinate system for whole China?

I want to project data of China. I'm not concerned with trying to preserve areal or directional relationships but preserving distances would be nice. Does such a coordinate system exist?
2
votes
1answer
676 views

Are there EPSG codes for solving China GPS shift problem?

I am currently using PyProj for a project, and would like to transform from WGS-84 (or other systems) to the China-specific datums for writing into kml files. I have seen other packages specifically ...
2
votes
0answers
293 views

Working with spatial data for India when key state truncated due to territory issues?

I am in India, working with spatial data. The data is downloaded from gadm.org http://gadm.org/ The state of Jammu and Kashmor (the top most state) is truncated (it reflects ground reality where 1/3 ...
1
vote
1answer
180 views

Postal codes of China

Where can I find geodata with postal codes of China with an open license (commercial use is allowed)?
1
vote
1answer
78 views

Retrieve traditional Chinese entries from OpenStreetMap

I want to retrieve both simplified and traditional Chinese entries from OpenStreetMap. E.g. <node id="244082315" lat="43.558611" lon="126.228611" version="5" timestamp="2014-01-21T10:07:18Z" ...
0
votes
1answer
1k views

Obtain free DEM data of South China

Is there any free source of Digital elevation model of China with the resolution of 30 meters or better and vertical accuracy of +-5m. Something along those lines
0
votes
1answer
374 views

where can I get land use data for Beijing [closed]

Iam looking for land use data for Beijing of 1985 and 2010
1
vote
1answer
324 views

Polyconic Projection for China?

I have a set of locations/points and I am trying to compute the nearest distance of these points from a Polyline. The points and the polyline lie in China and the Geographic Coordinate System is WGS ...
0
votes
0answers
242 views

Is it possible to put a raster layer on a shifted Chinese basemap using leaflet API?

Recently, we want to develop an application with leafleat and gaode basemap because some features of these products fullfill our basic needs. We want to overlay some raster layers caculated by spatial ...
5
votes
1answer
2k views

How to convert Chinese Beijing 1954 coordinates to WGS84

I have a series of coordinates for locations in Sichuan Province China that I need to convert so that I can use them in Google Earth. The coordinates are "1954 Beijing coordinates system" and show up ...
20
votes
3answers
14k views

What causes the GPS offset/shift in China?

I've spent close to two full days trying to understand the nature of the infamous GPS shift in China. After sifting through the noise, two recurring symptoms are that: GPS coordinates (WGS-84) plot ...
1
vote
2answers
2k views

Why does my phone's GPS suffer from “urban canyon” problems in Beijing but not New York?

In a separate question on Travel.SE I asked why my phone's GPS didn't seem to work in Beijing, China. Turns out that it was simply an "urban canyon" problem, and that the GPS did in fact work when I ...
1
vote
1answer
988 views

Baidu Maps SRID?

I am making an App which will make use of Baidu maps for geofencing and other features (as the app will be released in mainland China) I am using GeoDjango, with Postgresql / PostGIS / Proj4 etc.. ...
0
votes
1answer
248 views

Colorise China Provinces using CartoDB?

I have a table with the China provinces and a numeric value associate to each one, how I can colorise the China provinces based on these values?, like a "intensity" scale. I'm using CartoDB. An ...
0
votes
2answers
4k views

town, village, prefecture shapefiles for China?

I'm looking for boundary files for towns, villages and prefectures in China that are free. I've came across http://chinadataonline.org/, but they are limited. Can anyone tell me where to look?
4
votes
0answers
848 views

What projection system is used in China which is aligned with WGS84 [closed]

I have some GPS tracks in Beijing. I want to project it and convert the lat long degree values in meters for calculation in euclidian space. I was wondering what is the most suitable coordinate and ...
2
votes
4answers
2k views

Given latitude/longitude, how to determine whether point is in Japan or China?

For OpenStreetMap names transliteration to Latin characters, I need to know whether a point (latitude, longitude) should be transliterated to Japanese or Chinese. What formula f(latitude, longitude) ...
3
votes
1answer
3k views

How to align (georeference) images using QGIS?

I'm completely new to all this. I'm trying to make a map of Han dynasty-era China for a mod for a game called Crusader Kings 2. I've downloaded QGIS and Natural Earth 2, but I need this image to ...
4
votes
3answers
2k views

Where can I get Beijing GIS data?

I was meandering so many places to find GIS data for Beijing, but it seems like I cannot get to any useful resources. Though I did get at least road, water shapefiles and outline of Beijing city. ...
15
votes
6answers
10k views

Seeking China data? [closed]

I'm looking for good free online sources of vector (shapefiles of cities, provinces, terrain etc) and raster data on China. Are there any open repositories of this type of data?