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viewerdisplaydata - Constructor

	Package	display
	Module	viewer
	Tool	viewerdisplaydata

Create a Viewerdisplaydata tool

Synopsis
viewerdisplaydata(viewer, name, displaytype, data)

Arguments

viewer		the Viewer tool which will manage this tool
		Allowed:	Viewer tool
name		a unique name for this Viewerdisplaydata tool
		Allowed:	string
displaytype		a string describing the type of drawing
		Allowed:	'raster', 'contour', 'simpleaxes' or 'skycatalog'
data		The data source to draw, either an AIPS++ Image name, or a Glish array
		Allowed:	string or array

Returns
Viewerdisplaydata tool or fail

Description

This is the only constructor for Viewerdisplaydata tools. It constructs (creates) a Viewerdisplaydata tool which can subsequently be registered on (and hence displayed on) Viewerdisplaypanel tools.

The displaytype argument can be:

• 'raster', for which data can be a (float or double) Glish array having two or more dimensions, or a string giving the name of an AIPS++ Image on disk.
• 'contour', for which data can be a (float or double) Glish array having two or more dimensions, or a string giving the name of an AIPS++ Image on disk.
• 'simpleaxes', for which data must be tt '<none>'.
• 'skycatalog', for which data must be a string giving the name of an AIPS++ Table on disk.

This constructor should not be called by users: it is called by the loaddata function of the Viewer tool, which returns a Viewerdisplaydata tool.