combine_lipidData duplicates f_data

[pmartr]

combine_lipidData duplicates f_data

[stratkg]

Need to revisit this with Daniel...there was a reason that this happened...

[clabornd]

@stratkg @leac176

Sry yes I will put this back on my radar. For note taking purposes: it is basically because, in an attempt to preserve f_data information, I combine the two f_data's and create de-duped column names. Later, if they wanted to keep group info, I find which of those columns have the same values as the original grouping column and use those columns to re-run group_designation (same with covariates).

New way per discussion with @lmbramer :

• If user wants to keep group info, force both group_DF's to be present and for the groups/covariate structures to be functionally the same.
• full_join f_datas on sample name and all covariates/main effects with the same names and check that the join doesn't produce new rows. (other duplicate non-sampleID/covariate/main-effect columns will be copied)
• Re-run group_designation on the original main effects and covariates from the first object's group_DF.

[stratkg]

Closing this issue after #186 was resolved and updates merged into develop