1.3.2.0 msmetadata.chanres

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msmetadata.chanres - Function

1.3.2 Get an array of channel resolutions for the specified spectral window.

Description

Get an array of channel resolutions for the specified spectral window. The parameter asvel indicates if velocity widths (True) or frequency widths (False) should be returned. The unit parameter specifies the units that the returned values should have. If empty (default), ”Hz” will be used if asvel=False, or ”km/s” will be used if asvel=True.

Arguments


Inputs
spw	Spectral window ID.
	allowed:	int
	Default:
unit	Desired unit of returned quantities. Empty means ”Hz” if asvel=False, ”km/s” if asvel=True.
	allowed:	string
	Default:
asvel	Should return values be equivalent velocity resolutions?
	allowed:	bool
	Default:	false

Returns
doubleArray

Example

    msmd.open("my.ms")
    # get the channel resolutions for spectral window 2, in m/s
    chan_res = msmd.chanres(2, "m/s", True)
    msmd.done()

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