code: def proto_02_03_IVfast(abf=exampleABF):
      
      av1,sd1=swhlab.plot.IV(abf,.6,.9,True)
      swhlab.plot.save(abf,tag='iv1')
      Xs=abf.clampValues(.6) #generate IV clamp values
      abf.saveThing([Xs,av1],'iv')
docs: fast sweeps, 1 step per sweep, for clean IV without fast currents.