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Set Seed

Applicability:

Cadcorp SIS Map Modeller
Cadcorp SIS Map Editor
Cadcorp SIS ActiveX Modeller

Map Window:

Conditions for use:

Item Class: Polygon
Number selected: 1
Minimum item status: Editable

The Set Seed command can only be used with BDS and internal overlays. This is because it uses the _seedx#, _seedy# and _seedz# system properties which are not available with other overlays.

Description:

sets the seed point of the Polygon item. The seed point of a Polygon is used to place thematic bar chart and pie charts. It is also used for some geometrical tests.

You can find out where a Polygon item's seed (or origin) is by using Properties [Home-Selection] to examine its origin location. You can also type an "A" snapcode inside the Polygon to snap onto the seed position.

When you create a Polygon item, SIS will place the seed in a sensible default position. This will always be inside the Polygon, and will be at the centre of gravity if possible. Sometimes you may want to change the seed position - for example if a Polygon has disconnected islands, then you can choose which island to put the seed in.

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