Synopsis
		sfagc < in.rsf > out.rsf repeat=1 rect#=(125,1,1,...)

October 2011 program of the month:
http://ahay.org/blog/2011/10/01/program-of-the-month-sfagc/

Parameters
		int rect#=(125,1,1,...) smoothing radius on #-th axis   int repeat=1 repeat filtering several times

Used In
		BEI          dpmv/krchdmo krch/wgkirch vela/vscan   DATA          freeusp/land sigsbee/ptest sigsbee/pwemig teapotdome/canoren viking/basicm8r   GALLERY          sigsbee/oway   GEE          pch/steep   HANSUNG          cgg/real cgg/syn   JLU          fspfint/cmp lcfs/lcfest lcfs/rdata vdseislet/usp   M8R          data/freeusp   RSF          rsf/sfagc school/data school2017/seismic school2020/seismic   SEP          vc2/beivc vc2/elfvc vc2/sigvc   SWAG          itime/oz2 itime/oz6   TCCS          diffr/fault diffr/gom ltft/groll pi/bei probdif/nankai probdif/noisy-synthetic probdif/synthetic shape/beivc simistack/bei t2dweak/alaska t2dweak/field time2depth/masha2 time2depth2/beinew timefreq/syn timelapse/duri uncert/beivc wetm/beivel   UH          avostack/stack