I am trying to write a formula for a data table that allows me to subtract the %Area of each glycan species in the sample set. An example would be:
d%Area = (%Area of G0 in A) - (%Area of G0 in B)
How can I write the formula to group by sample name and glycan species?
![giulia_lambiase_0-1656495403599.png giulia_lambiase_0-1656495403599.png](https://community.jmp.com/t5/image/serverpage/image-id/43674i68809A1696AC71D8/image-size/medium?v=v2&px=400)