Synopsis
		sfattr < in.rsf lval=2 want=

Sample output from "sfspike n1=100 | sfbandpass fhi=60 | sfattr"
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rms = 0.992354
mean value = 0.987576
2-norm value = 9.92354
variance = 0.00955481
standard deviation = 0.0977487
maximum value = 1.12735 at 97
minimum value = 0.151392 at 100
number of nonzero samples = 100
total number of samples = 100
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rms = sqrt[ sum(data^2) / n ]
mean = sum(data) / n
norm = sum(abs(data)^lval)^(1/lval)
variance = [ sum(data^2) - n*mean^2 ] / [ n-1 ]
standard deviation = sqrt [ variance ]

Parameters
		int lval=2 norm option, lval is a non-negative integer, computes the vector lval-norm   string want= 'all'(default),'rms','mean','norm','var','std','max','min','nonzero','samples','short' want= 'rms' displays the root mean square want= 'norm' displays the square norm, otherwise specified by lval. want= 'var' displays the variance want= 'std' displays the standard deviation want= 'nonzero' displays number of nonzero samples want= 'samples' displays total number of samples want= 'short' displays a short one-line version

Used In
		GEE          mda/morgan