meeting with George 20221006

Looking at the "gapify.jy" script: https://research-git.uiowa.edu/jbf/viper/-/blob/main/u/2022/george/20221004/gapify.jyds

1. why isn't Z going to the positive when going up -22KHz to 0? (Or neg on the next sweep)
2. add adjustment to the range -22KHz, +22KHz?
3. play with and understand butterworth on one segment (50 pnts) -- where is the big sine wave coming from?
4. add switch to remove the slope from each packet of data