datafilter.filter

Filter a data array

Synopsis
filter(data, width, method, progress)

Arguments

data	in	Input numeric data array
		Allowed:	Numeric Glish vector
width	in	Width of running median filter
		Allowed:	Positive integer
		Default:	5 points
method	in	The method type
		Allowed:	String (case insensitive) from 'median' or 'mean'
		Default:	'median'
progress	in	See progress reports on median filter every progress points
		Allowed:	Positive integer
		Default:	No reports

Returns
Numeric vector or fail

Description

This function running-filters a data array with a variety of kernels over the specified width. It returns the filtered data vector.

As yet, input masks are not handled.

Example

- include 'datafilter.g'
- df := datafilter()
- d2 := df.filter(d, method='median', width=10)     # Data array 'd' assumed pre-made

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