The relation between the dimensions of features on a map and the geographic objects they represent on the earth, commonly expressed as a fraction or a ratio. A map scale of 1/100,000 or 1:100,000 means that one unit of measure on the map equals 100,000 of
NOTE A data set has no real scale as the user may choose at which scale he or she wants to display it. Nevertheless, it is usually not appropriate to display a data set at an arbitrary scale, so typically some scale information is associated with a data set (or its data product specification). This may be a scale range or a medium scale (i.e. it is relevant to use and display the data set around this "medium scale”).