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Displaying flow arrows on a TIN

You can use the Flow theme to display flow arrows on a 3D TIN.

Select Add Theme [Home-Map], select the overlay containing the TIN, select the Flow theme and click Next.
In the Flow Styles dialog select a Minimum and Maximum gradient which will be depicted with a flow arrow:

Gradient Range

Minimum

Do not show flow symbols for shallower gradients

Maximum

Do not show flow symbols for steeper gradients

Styles

Symbol

Selects the symbol that will be used to draw flow symbols (typically Chevron).

Pen/Brush

Pen/Brush to be used for flow symbols.

Troubleshooting

When putting flow arrows onto your TIN, check the scale of the TIN and the display scale of your shapes. Too large a scale and the shapes will not appear unless you zoom in. Too small a scale and they will appear too big. An alternative to using one of the default shapes is to create your own arrows. To do this, draw one on screen that displays at a suitable scale, use Symbol [Create-Miscellaneous] and click on your new Symbol.

The Save Symbol As dialog will be displayed:

Enter the Folder name and Symbol Name. This symbol will be stored in the current library:

The symbol is available if you wish to use it again.

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