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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

Example Line plot

Line form configuration panel

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 the lines 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