componentlist

Description

A componentlist is a tool that contains functions that manipulate components. A component is a functional representation of the sky brightness and is described in more detail in the overview of this module.

The simplest way to make a componentlist tool is to use the emptycomponentlist constructor. This creates a componentlist tool that does not contain any components and is not associated with any file.

The alternative is to use either the componentlist or asciitocomponentlist constructors. These create a componentlist tool by reading the data from an CASA table or a properly formatted ascii file.

The simplest way to add components to a list is to use the simulate function. The components that are added to the list can then be edited using the component editor, or any of the manipulate functions like setshape or setrefdir.

??	Construct an empty componentlist
??	Construct an componentlist from the data in an CASA table
??	Create a componentlist from an ascii file
??	Append components from another componentlist.
??	make a componentlist tool from a record
??	convert componentlist to a record
??	Remove a component from the list.
??	Permanently delete removed components.
??	Obtain removed components.
??	Find the number of components in the list.
??	Return a vector of indices.
??	Sort the components in a list
??	Check if a component is physically plausible
??	Sample the flux of the list in a specified direction.
??	Give the list a name so it can save itself.
??	Add some simulated components to the list
??	Add a component to the list
??	Save the componentlist to disk and reset its state.
??	Start up the component editor gui
??	Delete the componentlist tool

??	Mark components in the list
??	Unmark components in the list
??	Determine which components are selected
??	Get the label of the specified component
??	Set the label of the specified components
??	Get the flux value of the specified component
??	Get the flux unit of the specified component
??	Get the polarization representation for the flux of the specified component
??	Get the error in the flux of the specified component
??	Set the flux of the specified components
??	Change (convert) the flux units of the specified components
??	Change (convert) the polarization representation of the specified components
??	Return the reference direction
??	Get the RA of the reference direction.
??	Get the declination of the reference direction.
??	Get the reference frame of the reference direction.
??	Set the reference direction
??	Set the reference frame for the direction
??	Convert the reference direction to a new frame
??	Returns the shape type of the component

??	Return the shape parameters the component
??	Change the shape of the component
??	Change the units of the shape parameters
??	Returns the spectral shape of the component
??	Return the spectral parameters the component
??	Change the spectrum of the component
??	Get the reference frequency
??	Get the reference frequency value
??	Get the reference frequency unit
??	Get the reference frequency frame
??	Set the reference frequency
??	Set the reference frame for the frequency
??	Convert the reference frequency to a new unit
??	Extract a component from the list.
??	Add a component to the list.
??	Replace components in the list.
??	Summarize the specified component to the logger
??	Is the argument a componentlist tool?

The simplest way to make a componentlist tool is to use the emptycomponentlist constructor. This creates a componentlist tool that does not contain any components and is not associated with any file.

The alternative is to use either the componentlist or asciitocomponentlist constructors. These create a componentlist tool by reading the data from an CASA table or a properly formatted ascii file.

1.4.2 componentlist - Tool