Chapter 1 Project Background [Create your own wmts service multi-source Spatial Data Service Integrated Development-reduce project costs to reassure customers]

Zookeeper Recently, I encountered such a task of loading offline maps based on skyline. Many solutions have been found to solve this problem. Finally, it was coincidental to the idea of building a local wmts service [version support for skyline6.5 or later]. You can browse and search a large number of materials on the Internet. I found some open-source projects. Finally, the problem is solved.
1. offline data download
The developed tools support downloading data on the Internet, such as Google, Bing, Map of heaven and earth, AMAP, and so on, and then reorganizing and integrating multiple sources of data and publishing it to wmts.
Services in WMS rest title, image, and other formats published by ArcGIS can be converted to services in wmts format.
2. Release of service data
Because almost all the map data required for geological disasters in the fields involved in the project is from a single Internet Data Service source in the wild, which cannot meet the data requirements (the customer did not provide us with images, or vector data and service ). When you use a data route to download and obtain high-resolution tile data, if a single service address does not find the data, the system automatically retrieves the data from another service address until the data is found. If none of the data sources are found. The system automatically converts the data at the upper level by using the interpolation algorithm to increase the longitude, and then re-numbers the data to obtain the target data.
Not much about hard food. You need to prepare open-source projects for the compression solution of the DLL and SQLite database of gd1c.
Prepare the environment. On Friday of every week, I will give the code and ideas to everyone. This tool is more powerful.