The ic-data:Datapoint is an atomic piece of information about a certain observable quantity in nature that can contain a numerical value and a corresponding unit of measure. An ic-data:TimeSeries is related to the ic-data:Datapoint class via the ic-data:hasDatapoint (0..N) property and is defined as an ordered sequence of data-points of a quantity that is observed at spaced (not necessarily equally spaced) time intervals.
The ic-data:Datapoint is defined as a subclass of saref:Measurement and, as such, inherits the saref:hasValue and saref:hasTimestamp properties. Therefore, if the combination of a value and timestamp is sufficient to represent a datapoint, then the SAREF concepts for measurement can be directly reused. However, we noticed that often, especially when representing timeseries of datapoints in a forecast (see Forecast module in Section 4.3), a number of additional properties are needed. Therefore we extended SAREF by assigning to the ic-data:Datapoint and the ic-data:TimeSeries the following properties:
