Process Existing Model

Two functions are available for processing fuzzy logic model files:

• "running" a model based on the contents of the file
• creating a flow chart of the contents of the file that graphically documents the inference network of the model

Re-running a model file

This function automatically executes fuzzy logic operations performed at some earlier point and recorded in a dBase file, referred to as a model file.

1. Select 'Process Existing Model...' from the SDM menu
   OR
   Click the 'View Model (Text)' button if the fuzzy logic calculator is open.
2. Select the steps to be run. Each row in the file represents a fuzzy operation or processing step.

• To select a row, click on it.
• To add to the selection, hold down the shift-key and click on additional rows.
• If no selection is made from the steps in the model, all steps will be processed.

1. To run, click 'Run'.
2. When prompted, specify whether the output grids are to be added to the active view or a new view.
3. When prompted, specify a name and location for each of the output grids as they are processed.

NOTE: If any of the initial evidential themes cannot be found in the active theme, processing will stop. If you want to apply the operations recorded in a model to themes with different names, you can:

• temporarily change the theme names to match those in the file
• edit the file so that the theme and field names match the themes in the view. NOTE: processing will fail if it Arc-SDM cannot interpret the file syntax

Plotting the contents of a model file as a flow chart

This function creates an ArcView layout document and draws a flow chart of the contents of the file. For example, the contents of the file shown in the section 'To view the contents of the fuzzy logic model' looks like this:

1. Follow steps 1 and 2 for re-running a model file, from the previous section.
2. To plot the flow chart, click 'Plot'.

When plotting is complete, the name of a new layout document will be reported where the flow chart has been plotted.

Editing the layout document

The graphic elements that are used to draw each theme, including the image of the theme, the surrounding frame and the caption, have been grouped so that they are easily moved or resized as a single element. To Ungroup:

1. Select the theme image.
2. Select 'Ungroup' from the Graphics menu.

The grain of the drawing grid has been set to a fine spacing (0.01" in both the x and y dimensions) to enable small adjustments.

ArcView On-line Help Topic: See 'Laying out and printing maps' in the help Contents