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In research communities (for example, earth sciences, astronomy, business, and government), subsetting is the process of retrieving just the parts of large files which are of interest for a specific purpose. This occurs usually in a client—server setting, where the extraction of the parts of interest occurs on the server before the data is sent to the client over a network. The main purpose of subsetting is to save bandwidth on the network and storage space on the client computer. Subsetting may be favorable for the following reasons: * restrict or divide the time range * select cross sections of data * select particular kinds of time series * exclude particular obersvations ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「subsetting」の詳細全文を読む スポンサード リンク
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