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#### A.4.5.30 Area Form

The Area form () is available from the Area layer control, and outlines or fills areas that are defined in a table row.

Example Area plot

Area form configuration panel

Configuration options are:

Shading Mode
  See Appendix A.4.6.
Polygon Mode
  Defines how the polygon is drawn. Options are
  - `outline`: draws a line round the outside of the polygon
  - `fill`: fills the interior of the polygon
  - `cross`: draws a line round the outside of the polygon and lines between all the vertices
Thickness
  Controls the line thickness used when drawing polygons. Zero, the default value, means a 1-pixel-wide line is used. Larger values make drawn lines thicker, but note changing this value will not affect all shapes, for instance filled polygons contain no line drawings.
Minimal Size
  Defines a threshold size in pixels below which, instead of the shape defined by the Area coordinate, a replacement marker will be painted instead. If this is set to zero, then only the shape itself will be plotted, which may mean it appears as only a single pixel. By setting a larger value, you can ensure that the position of even small areas is easily visible, at the expense of giving them an artificial shape and size. This value also defines the size of the replacement markers.
Minimal Shape
  Selects the shape of replacement markers that get plotted instead of very small areas, as controlled by the Minimal Size setting.

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
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