1.3.1.0 ms.cvel - Function

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ms.cvel - Function

1.3.1 transform spectral data to different reference frame and/or regrid the frequency channels

Description

This function permits you to transform the spectral data of your measurement set to a given reference frame and/or regrid it. It will combine all spectral windows of the MS into one.

Arguments


Inputs
mode	”channel”, ”velocity”, ”frequency”, or ”channel_b”, default = ”channel”
	allowed:	string
	Default:	channel
nchan	number of channels, default = -1 = all
	allowed:	int
	Default:	-1
start	start channel, default = 0
	allowed:	any
	Default:	variant 0
width	new channel width, default = 1
	allowed:	any
	Default:	variant 1
interp	interpolation method ”nearest”, ”linear”, ”spline”, ”cubic”, ”fftshift”, default = linear
	allowed:	string
	Default:	linear
phasec	phase center, default = first field
	allowed:	any
	Default:	variant
restfreq	rest frequency, default = 1.4GHz
	allowed:	any
	Default:	variant 1.4GHz
outframe	LSRK, LSRD, BARY, GALACTO, LGROUP, CMB, GEO, TOPO, or SOURCE default = ”” = keep reference frame.
	allowed:	string
	Default:
veltype	radio or optical, default = radio
	allowed:	string
	Default:	radio
hanning	If true, perform hanning smoothing before regridding.
	allowed:	bool
	Default:	true

Returns
bool

Example

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