Main idea: the status quo life, work, entertainment, medical care, education, shopping facilities distribution is roughly representative range and direction of urban development space;
Facilities covering can also be considered to be the scope of activities, also is the scope of urban planning and construction;
Facilities point density, the greater the representative, the greater the demand for and use live, also certain degree reflect the degree of population agglomeration,
The main steps:
1. Through the web crawler technology, grab baidu map residential area, restaurants, hotels, supermarkets, convenience stores, shopping malls, office buildings, hospitals, 123 class interests latitude and longitude coordinates.
Region 2. Baidu grab points of interest for BD09 coordinate system, the need to convert the coordinate system, the difficulty is how to coordinate system transformation, all kinds of post response programming procedures to solve, but most only a single coordinate transformation, the batch conversion need to further refine programming, throughout the browse posts and taobao after consultation, both conversion tool is not available, or too expensive, can't afford it, finally developed the batch conversion program, realized the baidu map to WGS84 coordinates batch conversion process,
3. Will import the latitude and longitude coordinates of GIS, through the GIS kernel density analysis, obtain facilities point distribution density layout,
The graph above, it can be seen:
1. The space distribution: generally see the present situation of the development status quo of city boundaries and urban development direction (such as bilateral mainly east and southwest direction; Guangyuan is mainly to the southeast and southwest direction);
2. The development intensity: 5 facilities distribution density is highest, the centre of the city is as the regional development in northeast sichuan core; Secondly we the planning in northeast sichuan nanchong and dazhou as the core, but see from the figure guangyuan city center facilities distribution area is greater than and dazhou, nanchong behind deserves further exploration;
3. Integration: Lang cangnan integration has a certain realistic foundation, can be seen from the chart LangZhong and CangXi development has been rapid development; Peng Ann and camp hill can group development,
Other careful reading, everyone study,
Points of interest for all over the country provinces and cities to grab, and baidu BD09 coordinate system, the interaction between the gold coordinate system and WGS84 transformation, also can contact qq: 270088983