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### A.4.5 Plot Forms

Plot "forms" are the instructions for what shapes to actually paint on the plotting surface given some positional data from a table. The most obvious (Mark) is simply to plot a marker with a fixed size and shape at each data position. However, there is a range of other things you might want to do, including error bars, vectors, contours, text labels, ...

The options provided are described, with the additional configuration information required, in the following sections. Not all are available for every plot type.

- A.4.5.1 Mark Form
- A.4.5.2 Size Form
- A.4.5.3 SizeXY Form
- A.4.5.4 Vector Form
- A.4.5.5 SkyVector Form
- A.4.5.6 Error Bars Form
- A.4.5.7 Ellipse Form
- A.4.5.8 SkyEllipse Form
- A.4.5.9 Line Form
- A.4.5.10 Linear Fit Form
- A.4.5.11 Text Label Form
- A.4.5.12 Contour Form
- A.4.5.13 Density Form
- A.4.5.14 SkyDensity Form
- A.4.5.15 Histogram Form
- A.4.5.16 KDE Form
- A.4.5.17 KNN Form
- A.4.5.18 Densogram Form
- A.4.5.19 Pair Marks Form
- A.4.5.20 Pair Link Form

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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@bristol.ac.uk