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Version 1.9 Build 1556

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autoflag.setfreqmed - Function

	Package	synthesis
	Module	autoflag
	Tool	autoflag

Sets up the freq-median flagging method

Synopsis
setfreqmed(thr, hw, rowthr, rowhw, column, expr, fignore)

Description

The freqmed method uses a median-in-frequency filter. It is very similar to timemed, except that it is based on a sliding median in frequency:

m_cbt = median{d_c$\prime$bt, where | c$$\prime$$ - c| $$\leq$$ $$\delta$$}

In all other respects this method is identical to timemed, hence we refer you you to the settimemed description for all details.

Arguments

thr		Flagging threshold
		Allowed:	numeric (real)
		Default:	5
hw		Half-window for the sliding median
		Allowed:	Int
		Default:	10
rowthr		Row flagging threshold
		Allowed:	numeric (real)
		Default:	10
rowhw		Half-window for the sliding median of the MAD
		Allowed:	Int
		Default:	10
column		Which column to base flagging on
		Allowed:	"DATA", "MODEL" or "CORR"
		Default:	DATA
expr		Expression to use
		Allowed:	see text
		Default:	"ABS I"
fignore		Ignore existing flags
		Allowed:	Bool
		Default:	F

Example

- af:=autoflag('3C273XC1.MS')
- af.setdata()
- af.setfreqmed(thr=5,hw=5,expr="- ABS RR LL")