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Version 1.9 Build 1488

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cscatalog.querydirection - Function

	Package	vo
	Module	conesearch
	Tool	cscatalog

Query a catalog for a direction return a componentlist

Synopsis
querydirection(direction, sr, catalog, fluxrange)

Description
This queries a specific catalog for a given direction. The VOTable is returned after conversion to a componentlist tool. The componentlist tool is anonymous and must be renamed using the componentlist.rename function.

Arguments

direction		Direction measure
		Allowed:	Measure
		Default:	none
sr		Search radius
		Allowed:	Quantity
		Default:	'1deg'
catalog		Catalog to be queried
		Allowed:	NVSS|FIRST|WENSS
		Default:	NVSS
fluxrange		Flux limitation
		Allowed:	Vector of quantities
		Default:	F

Returns
componentlist

Example

# 
# Make a componentlist holding all sources with 10 degrees of 3C84
#
include 'cscatalog.g';
cs:=cscatalog();
cl:=cs.querydirection(dm.source('3C84'), sr='10deg', 'NVSS', fluxrange='5mJy');
if(is_fail(cl)) fail;
cs.done();