lightweight gis

Google Maps Jquery maps How does Google map work? Google Maps API programming resources Google map limits the map zoom level and display range Summary of recent WebGIS learning and online vectoring of GoogleMap Images Google map V3 API calls do not require an API key Use JSON to pass data to the Google map for identification Share a javascript library for drawing various images in Google Map Google map Learning (2) simple Google map and Google map events General implementa

1. introduction The current application of geographic information systems requires the organic integration of GIS and other systems such as MIS and OA. Therefore, most GIS systems are developed with component GIS as the core for secondary development. Therefore, with the rapid development of computer and geographic information technology and the gradual maturity

As you know, the multithreading security of Java is implemented based on the lock mechanism, and the performance of lock is often unsatisfactory.The reason is that Monitorenter and Monitorexit, the two bytecode primitives that control multithreading synchronization, are implemented by the JVM relying on operating system mutexes (mutexes).A mutex is a resource-intensive operation that causes a thread to hang and, in a short time, needs to be re-dispatched back to the original thread.In order to o

I saw Linlin reprinted "chatting about GIS professional orientation and personal positioning problems" (http://www.cnblogs.com/gisattic/archive/2005/05/19/158872.html), there are some supplements and ideas. The GIS software industry is still one of the highlights of the software industry in China. In terms of market share and software quality, I personally think it is still said, but on the other hand, wi

The current application of 3D GIS is mainly limited to 3D visualization and realistic visual performance, and its important 3D analysis and 3D operation functions are also very limited. The construction of three-dimensional spatial databases is still a complex and expensive comprehensive project. The production efficiency, quality control, data security, and effective storage and management of large 3D GIS

1. Accuracy of spatial databases Methods and Techniques for error handling and uncertainty error handling in geographic information data, including: Uncertainty error model; Error Tracking and coding; Calculation and Expression of errors in GIS applications; Data Accuracy Evaluation; Research on data quality, metadata, and data standards. 2. Study on Spatial Relational Language Based on the standardized form of geospatial concepts, using natural lang

1. Curiosity First, GIS professionals should be curious. This curiosity is not just about geospatial technology, but about the world around us. In our work, we must actively consider the spatial relationship of phenomena, ranging from local to global, covering population, land use, transportation models, regional natural disasters, biodiversity, and global climate change. The number of new multimedia, sensors, and mass data sources has increased s

The current application of 3D GIS is mainly limited to 3D visualization and realistic visual performance, and its important 3D analysis and 3D operation functions are also very limited. The construction of three-dimensional spatial databases is still a complex and expensive comprehensive project. The production efficiency, quality control, data security, and effective storage and management of large 3D GIS

In recent years it and space technology development, cloud computing, big data, real-time information, LBS, unmanned aerial vehicles, tilt photography and other new technologies emerging, Internet infrastructure construction achievements, broadband become a national strategic public infrastructure.GIS (Geographic information System) as an important tool for spatial information analysis and processing. Its application needs are also changing dramatically.Online content, convenient collaboration,

. realproxy. handlereturnmessage (iMessage reqmsg, iMessage retmsg) In system. runtime. remoting. proxies. realproxy. privateinvoke (messagedata msgdata, int32 type) In idciplservice. ff () In dciplserviceclient. ff () It is strange that no error will be reported if vs can be connected directly. During this period, all the methods mentioned on the Internet have been tried and still fail. Later, I switched to the ADF to connect and no error was reported. To make use of ArcObjec

LAdvanced and practical "Sg186" is a high-standard information project. The GIS platform must meet both the advanced and practical requirements. The GIS platform has been applied in the power industry. LSupport for standards and specifications Supports OpenGIS data model specifications; Supports the Geographic Information Service Specifications of OGC, such as WMS, WFS, and WCS, in this way, data is s

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Professional is a GIS, attention web2.0 is this half a month of things. It's hard to know what web2.0 is. Recently on the Internet often see this example, Google on a search, only gradually understand. In my understanding, web2.0 refers to a series of new technologies and applications that are now emerging. Blog,wiki,rss,kijiji and the like, XML-based applications form an example of web2.0 in reality. Of course, the most essential feature of web2.0 is

of ArcGIS is very bad; 3. excel workbooks and functions can be used to derive formulas and data-driven applications. Excel expansion macros can be used to become a professional data processing suite, instead of having to worry about data storage, display, and chart visualization. A Workbook itself is a customizable interface ;..., therefore, there are many tasks that can be completed based on Excel; 4. the lightweight VBA is a relief for general