IECM 12.0 beta User Manual > Using the IECM > Analysis Tools > Sensitivity Analysis >

Choose Dependent Variable(s)

Once you have chosen and configured an independent variable, you are ready to choose dependent variable(s). In this illustration, the net electrical output is chosen:

Sensitivity Analysis: Choose Dependent Variable(s)

The top of this screen contains a variable chooser (1) that is very similar to the parameter chooser provided on the Choose Independent Variable screen. This chooser contains both calculated parameters from the SET PARAMETERS program area and results from the GET RESULTS program area .

The chooser only shows calculated parameters and results that are affected by the independent variable. If you want to browse all affected variables, you can start at the top and press the down arrow key repeatedly to go to the next variable. (If you interact with any of the other controls while doing this, you will need to click on the chooser to put the focus back on it before pressing the down arrow key again.)

If you are interested in one or more specific variables, you may find it easier to locate them in the SET PARAMETERS and/or GET RESULTS program areas , where you can see them in context, before attempting to locate them here.

When you click on a parameter or result in the variable chooser, the screen is updated to show you three things:

•Summary (2): The summary appears below the variable chooser (1) . It tells you where both variables are located and what their ranges are. It also indicates that the independent variable is on the X Axis, and the dependent variable on the Y Axis.

•Table (3): The lower left part of the screen shows a table with the values of both variables. The independent variable is in the first column, and the dependent variable in the second. You can copy this table to the clipboard by clicking the Copy Table to Clipboard button to the right of the variable chooser (1) . We suggest pasting this table into a spreadsheet for easier viewing.

•Graph (4): The lower right part of the screen shows a graph with the independent variable on the X Axis and the dependent variable on the Y Axis. This graph is only intended to give you a general idea of the relationship between the variables; it does not show any numbers. If you want to see a more detailed graph, click the Show Detailed Graph button to the right of the variable chooser (1). You may also copy the detailed graph to the clipboard by clicking the Copy Detailed Graph to Clipboard button to the right of the variable chooser (1).

Note:

Performance table and cost table units are not currently supported on the Choose Dependent Variable(s) screen.