General Page - Flow Map

The General page is located in the Property Manager when a Flow Map is selected for the active layer. Information about the map's data file can be viewed and changed in the General page.

Change or save the map data file, specify the PID and Variable

columns, and set data limits on the General page of the

Property Manager.

Data Filename

The Data File property shows the current loaded data file for the map. Load a new data file into the map with the open button. Save changes to the data file with the save button.

Data Columns

The properties in the Data Columns section specify which data columns contain the map object PIDs and variable.

Start PID Column

Start PID indicates the location of the primary ID of the start locations in the data file. The data primary ID must match the primary IDs used on the boundaries. The Start PID column is only available when Connect centroids is the selected Method on the Map page.

End PID Column

End PID indicates the location of the primary ID of the end locations in the data file. The data primary ID must match the primary IDs used on the boundaries. The End PID column is only available when Connect centroids is the selected Method on the Map page.

PID Column

PID indicates the location of the primary ID of the polylines in the data file. The data primary ID must match the primary ID used for the polylines. The PID column is only available when Apply to polylines is the selected Method on the Map page.

Variable Column

Variable column indicates the data column for use in the map. The variable must contain numeric data to create the map.

Data Limits

The Data Limits section contains properties for specifying linked, global, or user defined data limits, and if absolute values are used for negative numbers.

Selecting Data Limits

When the Global data check box is clicked, the data limits are the minimum and maximum values in the Variable column, including unlinked data values.

Clicking the User-defined check box allows editing in the Minimum and Maximum cells. Type numeric values into Minimum and Maximum to set your own data limits.

If neither the Global data or User-defined boxes are selected, the data limits are the minimum and maximum linked values in the Variable column.

Negative Values

Choose how to treat negative values in the Negative values list. Selecting Ignore negative values does not include negative data values in the map. Selecting Use absolute values treats negative numbers in the data columns as positive numbers for mapping.