首先，数据是有维度的。每个语言的基础教程里都会有基本数据类型的介绍，这些数据类型按照维度分：零维数据类型，一维数据类型，多维数据类型。以perl为例，标量就是零维数据，数组就是一维数据类型，哈希就是多维数据类型。
Data visualization or data visualisation is viewed by many disciplines as a modern equivalent of visual communication. It involves the creation and study of the visual representation of data, meaning "information that has been abstracted in some schematic form, including attributes or variables for the units of information".
