Spatial Data Formats

The world-wide information revolution has caused almost every industry to face big data problems. In order to effectively deal with the all-round challenges brought about by large data and make full use of this unprecedented opportunity, the industry, the scientific and technological circles at home and abroad and even governments are actively planning and formulating strategic plans. March 2012, the United States government announced a 200 million dollar "big data Research and development plan", the study of large data to rise to the national will. The European Union has also introduced similar initiatives. In this context, the Chinese Computer Society in October 2012 set up the CCF large data committee of experts, ...

Do you need a lot of data to test your app performance? The easiest way to do this is to download data samples from the free data repository on the web. But the biggest drawback of this approach is that the data rarely has unique content and does not necessarily achieve the desired results. Here are more than 70 sites with free large data repositories available. Wikipedia:database: Provide free copies of all available content to interested users. Data can be obtained in multiple languages. Content can be downloaded together with pictures. Common crawl to establish and maintain a human being ...

It can be said that big data is one of the hottest trends in the IT industry today, and it has spawned a new batch of technologies to deal with big data. And new technologies have brought the latest buzz words: acronyms, professional terms, and product names. Even the phrase "big data" itself makes a person dizzy. When many people hear "big data", they think it means "a lot of data", and the meaning of large data does not only involve the amount of data. Here are a few popular words that we think you should be familiar with, sorted alphabetically. ACID ...

Do you need a lot of data to test your app performance? The easiest way to do this is to download data samples from the free data repository on the web. But the biggest drawback of this approach is that the data rarely has unique content and does not necessarily achieve the desired results. Here are more than 70 sites with free large data repositories available. Wikipedia:database: Provide free copies of all available content to interested users. Data can be obtained in multiple languages. Content can be downloaded together with pictures. Common crawl to establish and maintain a human being ...

Large data as a hot word for the web, has been frequently mentioned recently. In fact, global industry giants have been aware of the arrival of the "Big Data Age" by acquiring large data-related vendors for technology integration. 　　Experts say China has the opportunity to lead the development of the cloud computing industry in the "Big Data Age". At the 2012 China Data Center Conference held recently, Ubaogui, Deputy chief engineer of China Institute of Electronic Information Industry development, said that data center as the main support platform for enterprise IT construction, how to effectively and rationally control the total cost of ownership under the premise of the large data to obtain a price ...

"Perception shapes reality. "Environmentalists may think that wind power and solar power are successfully crowding out fossil fuels and will go a long way in the next few years, and that if you participate in the oil and gas conference, you will feel that oil and gas will continue to grow in the next few 10 years." This time, the feeling may be distorted or completely wrong. The same goes for tape. It is widely believed that tapes are gradually withdrawing from the market. The feeling may still be right before 2009, but over the past two years we have seen a recovery in tape. According to the market research company corporate Strategy Group ...

In addition to the "normal" file, HDFs introduces a number of specific file types (such as Sequencefile, Mapfile, Setfile, Arrayfile, and bloommapfile) that provide richer functionality and typically simplify data processing. Sequencefile provides a persistent data structure for binary key/value pairs. Here, the different instances of the key and value must represent the same Java class, but the size can be different. Similar to other Hadoop files, Sequencefil ...

September 29, 2013, the Science and Technology department, the National Remote Sensing Center, 863 planning Earth observation and navigation technology field navigation theme Expert group and navigation and location services, the general group of Experts in Beijing jointly organized the "Indoor and outdoor high-precision positioning and navigation white Paper" conference. The paper analyzes the present situation and situation of indoor and outdoor positioning navigation and location service, as well as China's indoor and outdoor high-precision positioning in the field has been achieved and development opportunities, and from the system construction, key technology research, standard system construction points out that China's leading the proposed XI and systems, to support navigation and ...

Recently found a web-based GIS cloud computing solution--giscloud, interesting and valuable. 　　But there are still great limitations. Features include: (1) grid and vector data display (2) input and edit vector layer, including shapefiles, MapInfo, KML, tab-delimited and GPX format, (3) built-in data file coordinate projection; prj file can be identified And let you select the output coordinate system (including the coordinates of the current project) ...

Absrtact: September 29, 2013, High-tech Division of Science and Technology, National Remote Sensing Center, 863 planning Earth observation and navigation technology field navigation topics Expert Group and navigation and location services in the general group of Experts in Beijing jointly organized the "Indoor and outdoor high-precision positioning navigation white skin September 29, 2013, High-tech Department of Science and Technology, 　　National Remote Sensing Center, 863 planning Earth observation and navigation technology area navigation theme Expert group and navigation and location service science and technology Special Group of Experts in Beijing jointly organized the "Indoor and outdoor high-precision positioning and navigation white Paper" conference. White Paper points ...