# SensorML 2.0 Examples

## Simple Extension of a Process

Perhaps the simplest example of the use of inheritance in SensorML is the simple extension of the LinearInterpolator process defined earlier. The LinearInterpolator is a general process that uses the linear equation y=mx + b to calculate y (output) from x (input). In our example instance below, we reference the base LinearEquation process using the typeOf element [highlighted]. Then, using the setParameter elements [also highlighted], we set the values for the two parameters, m (slope) and b (y intercept). We now have an instance of the LinearInterpolator process with specific values for slope and y-intercept.

An important note regarding the typeOf element: when referencing the base process, one must provide both the resolvable URL of the description of the base process within the xlink:href attribute, and the uniqueID (as defined by gml:identifier) in the xlink:title attribute.

NOTE: SensorML 2.0 is not yet approved by the Open Geospatial Consortium (OGC). Examples are provided for evaluation and are subject to change during the standards review and approval process. Contact mike.botts@botts-inc.net for questions or recommendations.

For reference, the base class LinearInterpolator is shown below.