In “chicago02: network structure analysis_networkx”, pysal is used to calculate the spatial distance weight when establishing the spatial weight between network routers. Pysal gives a variety of different methods to calculate the spatial weight, and involves a variety of spatial statistical models to analyze the spatial relationship between regions. However…


Extracte 1 m high-precision building height data of Chicago from. Las radar data. It is necessary to pay attention to how to deal with a large amount of raster data in order to avoid memory overflow and the size of individual files. …


Network structure (graph) can help to analyze the relationship between data, especially in the analysis of social network data. It can find the association between nodes. This node can be any data type to be analyzed, such as people and their social properties, geographical space and its attributes. Edge is…


This experiment group chooses Chicago as the object of urban spatial structure analysis, the analysis content involved will be more systematic and rich, some code functions directly use the previous research results, and constantly add new research content. The urban structure of Chicago is significantly different from that of domestic…


Point of Interest is widely used in urban planning. It can be used for analysis and calculation, such as navigation and positioning, geocoding, perimeter search, heat analysis, density analysis, location decision analysis, etc.; it can also be used for visual display, such as light map, cluster map, etc.

At present, the technology of acquiring POI data of Internet electronic map has been relatively mature, and Python is widely used.

Here is a case of Hotel data collection.


Today, I am going to continue sharing a land surface temperature prediction model for green space planning evaluation based on machine learning regression algorithm.

Usually, after analyzing the relationship between LST and land cover (land use type), it can only be used as a guide for planning, which is difficult…


When exploring the application of land surface temperature in the field of science, it is found that most of the studies are inclined to analyze the profile temperature or calculate the average temperature change of multiple buffer zones to explore the relationship between the surface temperature and land use (surface…


The method of suitability evaluation in urban security pattern is to combine all kinds of urban information and give corresponding weight to obtain the continuous value of urban suitability degree based on a certain direction analysis, such as suitability analysis of indicator species, evaluation of urban microclimate comfort, etc. This analysis method was derived from mchagrid’s Design Combined With Nature. With the development of GIS, it has become one of the main means to analyze the city. Based on this method, SIR model is introduced to analyze the dynamic process, and the range change of source point analysis spread is given after data condition superposition. In this case, convolution method and SIR model are used.

The process of expansion

Convolution kernel of SIR model


Whether returning farmland to forest or the damaged environment needs to be restored, the original vegetation community will be restored. Therefore, we should consider whether the relationship between the influence area and its surrounding environment is established in the restoration process. Since the corresponding value can be predicted according to…


In case 1, I introduce urban color analysis. Then we can explore intuitive impression next.

The method of clustering is used to extract the theme color of the image, and display it in the form of chart scatter to obtain the intuitive impression. In this case, two research routes were…

Jingyi Chen

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