The Simplest Methods to Create Time Series
To quickly create new time series, use the new time series group in the project ribbon (see the following figure).
The easiest way to create an equidistant time series with the ETA is to use the constant split button (see the following figure).
Three simple variants are available:
Simple: In ETA, a simple time series has only two data points, because two data points are required as a minimum for ETA to recognize a time series.
Constant: A constant time series has a constant value. It can contain any number of data points.
Ramp: A ramp connects two data points linearly and contains any number of data points.
The other two options 
Sine und 
Random are described in separate articles.
Creating Simple Time Series
The simple time series consists of the start time of the time series and only one further data point, which results from the simple time step size starting from the start time. The duration of the time series (in the following example 120 min) is the product of the number of data points (i.e., 2) and the time step size entered (in the following example 60 min).
You create a simple time series using the constant split button in the new time series group in the project ribbon. From the drop-down list, select Simple.
In the window that opens (see the following figure), first specify the start date, start time, and time zone for the new time series.
The next step is to define the time step size under the heading time axis.
Under data axis you define the value and the unit for the simple time series. The default setting for the value is 1.
The new time series is stored with the name 
Simple under temporary time series (see following figure). It can be viewed and further processed in the plot window and in the data grid.
Creating Constant Time Series
You can create a constant time series using the Constant button in the new time series group in the project ribbon.
In the window that opens (see the following figure), first enter the start date, start time, and time zone for the new time series.
The next step is to define the time axis. The duration of the time series and its time step size are defined here. In the drop-down list, choose whether you want a concrete time series or an abstract time series. Only for concrete time series are the key data specified in the first step start date, start time, and time zone taken into account. Instead, an abstract time series begins with day 00 and hour 00:00:00. For hourly increments, the next time step is day 00 and hour 01:00:00. In hourly steps, this is continued until the end of the time series.
Under data axis you define the value of the constant time series and its unit. The default setting for the value is 1.
The following figure schematically illustrates the parameters for generating a constant time series.
The new time series is stored with the name Constant under temporary time series (see the figure below). It can be viewed and further processed in the plot window and in the data grid.
Creating New Time Series as Ramp
A ramp is a linear time series that runs between a start value and an end value (see the following figure).
You create a ramp using the constant split button in the new time series group in the project ribbon. From the drop-down list, select Ramp (see the following figure).
The following window opens, in which you determine the properties of the time series. In addition to the start and end value of the ramp and the unit of the time series, you specify the duration and the step size. For concrete time series, the start time and the time zone must also be specified in the upper part of the window.
The new time series is then stored with the name Ramp and, if necessary, a number added in brackets under temporary time series in the project explorer. The following figure shows an example.
