Global Web-Enabled Landsat Data (GWELD)[1] NASA 原先的 Web-Enabled Landsat Data Conterminous U.S. Seasonal and Alaska Latitude/Longitude products 于 2019-12-2退役.由GWELD产品取代. GWELD产品包括 月度产品 GWELDMO v031 https://lpdaac.usgs.gov/products/gweldmov031 年度产品 GWE…
从10g开始,Oracle提供更高效的Data Pump(即expdp/impdp)来进行数据的导入和导出,老的exp/imp还可以用,但已经不建议使用.注意:expdp/impdp和exp/imp之间互不兼容,也就是说exp导出的文件只能用imp导入,expdp导出的文件只能用impdp导入. Data Pump的组成部分 Data Pump有以下三个部分组成: 客户端工具:expdp/impdp Data Pump API (即DBMS_DATAPUMP) Metadata API(即D…
https://en.wikipedia.org/wiki/Common_Gateway_Interface In computing, Common Gateway Interface (CGI) offers a standard protocol for web servers to interface with executable programs running on a serverthat generate web pages dynamically. Such programs…
1 AMSR-E数据介绍 The Advanced Microwave Scanning Radiometer for EOS (AMSR-E)是ADEOS-II 上的AMSR的改进版本, 是JAXA 为Aqua卫星提供的设备.AMSR-E致力于气候与水文的观测.AMSR-E是一种多频双偏振微波辐射计,它可以探测到地球表面和大气中微弱的微波辐射.可以探测到各种地球物理参数,包括水蒸气.云液态水.降水.海面温度.海面风速.海冰浓度.雪水量当量和土壤湿度.利用迄今为止最大的微波辐射计天线之一,以精细…
https://en.wikipedia.org/wiki/K-means_clustering k-means clustering is a method of vector quantization, originally from signal processing, that is popular for cluster analysis in data mining. k-means clustering aims to partition n observations into k…