Synopsis
		sfspectra < in.rsf > out.rsf all=n opt=y

March 2012 program of the month:
http://ahay.org/blog/2012/03/18/program-of-the-month-sfspectra/

Parameters
		bool all=n [y/n] if y, compute average spectrum for all traces   bool opt=y [y/n] if y, determine optimal size for efficiency

Used In
		BEI          dwnc/sigmoid ft1/autocor krch/sep73   CUP          rna2d/real   DATA          freeusp/land nankai/data nankai/shots   GEE          hlx/futterman mda/pefex   GEO384H          hw4/match   GEO384S          hw4/viking   JLU          apefsnsep/dune apefsnsep/simplegroll lcfs/lcfest spefdecon/rdata   M8R          data/freeusp   RSF          reprobook/exam2 school/data school2015/born school2017/seismic school2020/seismic scons/rsfpy su/rsfkasper su/rsfkfupm su/rsflab1 tutorials/cs tutorials/spitz tutorials/timefreq tutorials/wavelet   SEP          antial/sig bspl/chirp forwd/chirp steer/steering vc2/vcmod   SWAG          itime/oz6   TCCS          aii/heidrun attr/attr attr/vecta fwiseislet/blend fwiseislet/encoding-spar fwiseislet/encoding fwiseislet/noise-spar fwiseislet/noise fwiseislet/timedomain fwiseislet/wavelet ltft/vecta medianfilter/dragon medianfilter/model merge/apache merge/pcable merge/pcable2 orthogroll/field pcastack/field seislet/lena shape/int1 shape/smoo specrecom/gulf specrecom/ricker specrecom/tf sswtapp/boonsville strat/spec-decom synwav/lowf timefreq/chev timefreq/lowf timefreq/syn