## abs

Transforms all values of the input variable to absolute (positive) values.

Transforms all values of the input variable to absolute (positive) values.

Returns the arc cosine of a value; the returned angle is in the range 0.0 through pi.

Returns the arc sine of a value; the returned angle is in the range -pi/2 through pi/2.

A MissingValue is a real variable but it doesn’t have a value yet, it is usually used in TimeSeries to represent a TimeValue in a calendar that has no value

A Smart TimeSeries is an expression that builds TimeSeries on demand

Timeseries data type

Introduction to Timeseries

A timeseries is a list of values which are indexed by dates. A timeseries could be the price of a particular stock recorded at a certain time of each day (say the time that the stock exchange closes)

Functions that take a TimeSeries as their input

A TimeValue represents a single observed value in a timeseries

Working with timeseries in the Excel Add-in

Exploring a few aspects of TimeSeries in the OpenDataDSL language