Target Charts

The main Patchworks window will be displayed after the PIN file has successfully loaded. Now we can make use of the interface to exercise further control over the model.

One of the most effective ways to communicate goals to the scheduler is to adjust targets to define objectives and priorities. By asking for certain attributes to be maximized and others minimized, the scheduler must juggle treatment and timing decisions to reach the defined goals. Target values and weights can be adjusted while the model is running, causing it to seek a new equilibrium value. The Target Charts provide an opportunity to interact directly with the 'expert assistant' of Patchworks, enabling it to suggest optimal harvest patterns based on your long term goals.

Targets are defined in the Patchworks input data files (see the section called “The PIN file”), enabling you to track and modify any number of attributes in the dataset. Targets are automatically created for each of the accounts that have been established during the set up of input files, however, by default, all targets are inactive, and thus only track the condition of the forest. Only the ones "turned on" contribute to the objective function. Each target is represented by a Target Chart, which can be accessed in the Target panel directory tree. To access target charts, click on the "Targets" tab at the bottom of the left-hand panel of the main Patchworks window. Alternatively, targets can also be accessed by selecting active targets from the Window menu in the main Patchworks window. All "Active" Targets can be opened and displayed by selecting Open Active Targets from the Window menu and then select Tile Windows from the same menu to simultaneously view and compare all of them.

In the sample dataset, we have used a hierarchial naming scheme to organize accounts into three main folders: feature, patch and product. Target Charts can be accessed by navigating through the directory folders until bullet items are displayed representing the individual accounts. For example, there is a 'Seral' subfolder in the 'feature' target folder. Within the 'Seral' folder, four seral stages are represented by individual accounts: mature, old, regen and young. Clicking on these will open the target chart associated with the account and make it available for adjustments.

Figure 58. Target Chart Directory Tree