[SAC-HELP] a question about transfer command in Sac

[Arthur Snoke]

When running the SAC TRANSFER a second time within a SAC session, it 
remembers the settings for things like FROM and TO and FREQ from the first 
run.  Hence in Reza's example,

SAC> r 2000-08-03-0620-19S.TBZ___001_SP_E_TBZ___SP_E_SAC
SAC> rtr
SAC> transfer from polezero subtype ss1rd3_2.pz freq 0.1 1 10 12

followed by

SAC> transfer to WA

actually was translated by SAC as the complete command

transfer from polezero subtype ss1rd3_2.pz to WA freq 0.1 1 10 12

which is what he did in his second run, but the waveform has been 
transformed by the first transform.

One could either follow the first transfer with a

SAC r
SAC> transfer to WA

or one could write out the waveform after the first transfer

SAC> write try0.sac
SAC> quit

Restart SAC

SAC> r try0.sac
SAC> transfer to WA
SAC> write try4.sac

Shown in the attached plot is a plot of this try4 and try2, which was 
written applying the two-stage transfer to the original waveform.

Arthur
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