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#### A.4.5.12 Line Form

The Line form () draws a point-to-point line joining up the points making up the data set. There are additional options to pre-sort the points according to their order on the X or Y axis (using the Sort Axis control), and to vary the colour of the line along its length (using the Aux coordinate).

Example Line plot

Line form configuration panel

The configuration options are:

Aux
  If supplied, this controls the colour of the line along its length according to the value given here. As for the Aux shading mode, the details of the colour mapping are controlled using the Aux Axis control.
Thickness
  Line thickness in pixels.
Dash
  Dash pattern. The line is solid by default.
Sort Axis
  May be used to sort the points before the lines are drawn. By default (option None) the lines are drawn between the points in the sequence in which they appear in the table. But if you set it to X or Y the points will be pre-ordered along the given axis, so that lines for unordered rows will come out looking like a function of the X or Y coordinate rather than a scribble.
Antialiasing
  If true, pixels are blurred to give the line a smoother appearance.

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@jiscmail.ac.uk