5.1.2.0 sd.scantable.smooth

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sd.scantable.smooth - Function

5.1.2 Smooth the spectra
Description

Smooth the spectrum by the specified kernel (conserving flux).

The user should specify a type of smoothing kernel. Supported types are ’hanning’ (default), ’gaussian’, ’boxcar’, ’rmedian’, or ’poly’. The width of the kernel in pixel can be specified as width argument. For hanning this is ignored otherwise it defauls to 5 pixels. For ’gaussian’ it is the Full Width Half Maximum. For ’boxcar’ it is the full width. For ’rmedian’ and ’poly’ it is the half width. The order argument is an optional parameter for ’poly’ kernel (default is 2), to specify the order of the polnomial. It is ignored by all other kernels.

You can verify and decide whether you apply the fit result or not, if plot argument is True. In that case, you have to answer ’y’ or ’n’ for each spectra so that setting True is not recommended for large dataset.

If insitu is True, or insitu is None and sd.rcParams[’insitu’] is True, the method will not return the result, but apply operation on this scantable.

Arguments


Inputs
kernel	The type of smoothing kernel
	allowed:	string
	Default:	’hanning’
width	The width of the kernel in pixels
	allowed:	float
	Default:	5.0
order	Order of the polynomial for ’poly’ kernel
	allowed:	integer
	Default:	2
plot	Plot the fit and the residual
	allowed:	bool
	Default:	False
insitu	If False a new scantable is returned
	allowed:	bool
	Default:	None

Returns
scantable

Example

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