Select variables

Variables are selected in a Select Variables dialog (see image to the right) this is used when multiple inputs/outputs should be selected. How this is done is described step-by-step here:

  1. Select(/mark) an object type from the Object types list to the left in the dialog. (An object is selected by a simple Left-Click with the mouse pointer on that object in the list.)

    Note: The list will only contain the object types that are uesd in the model.

  2. Select(/mark) the desired setting from the Variable types list that appeared to the right in the dialog when an object type was selected. (An object is selected by a simple Left-Click with the mouse pointer on that object in the list.)

    Note: The list will only contain the variable types that are set somewhere in the model.

  3. (For input variables the allowed values of the inputs can be specified in the input set control described below.)
  4. Press the OK-button and the variables are added to the model.

Input Set Control

For input variables the input set control is used to specify allowed values of the input. The fields and functions of this control are described below (possibly with a link to a more detailed description about the filed).

Note: Once an input is selected the set will consist of a single value corresponding to the current value of that input in the model.

Note: If the defined input values are not possible to represent with a integer or continous variable the input variable will be treated as a Multiple-Choice Set (MCS). A MCS can consist an arbitrary combination of single values and/or standard sets as long as there are no duplicate values or overlaps.

Field/Function

Description

-button

Used to select the previous subset of the input set.

-button

Used to select the next subset of the input set.

-button

Used to delete the selected subset of the input set.

Value

Used to add single values to the input set. Once a valid value is entered it can be added to the input set by pressing the -button located to the right in this field (turns green once a valid value is entered).

Standard Set

Used to add standard sets to the input set. Once a valid standard set is entered it can be added to the input set by pressing the -button located to the right in this field (turns green once a valid standard set is entered). A standard set is specified by the three numbers:

Lower Bound: Editable lower bound for the variable.

Upper Bound: Editable upper bound for the variable.

Base (Optional): Optional value used to specify a custom distantance between consequtive values between the lower- and upper bound.

Note: The enumeration starts from lower bound and the upper bound is included even if it violates the selected base.

Note: If there is no base specified a default base will be used. For integer variables the default base is 1 and for continous variables there is no base.