Fix error in healthysig and fieldworkanalysis_samara vignettes

[Omabekee]

Hi Chloe,

This is an attempt to resolve the errors occurring during the knitting of the healthysig.Rmd and fieldworldanalysis_samara.Rmd vignettes by correcting the code causing the issue.

In healthysig.Rmd vignette, I noticed that the error was coming from line 46 to 54, when I checked Study 562/ experiment 10 had no signatures. This is why I think this error occurred. As a result, I commented out lines 46 to 54 as well as lines 130 to 180 where the bugs0 and healthysig0 objects were used.

In fieldworldanalysis_samara.Rmd vignette, the error occurred at lines 71 - 76, where the 'getMostFrequentTaxa' function wasn't correctly used, decided to update it by inserting 'directions' instead.
Another error at line 223 was corrected by changing 'maxit = 24' to 'maxit = 70'.

The vignettes were successfully built after these changes were made. I'm open to your feedback and corrections.

[lwaldron]

@haoyanzh do you know why http://bugsigdb.org/Study_562, Experiment 10, has no signatures? @Omabekee I think we should try to fix this signature and/or the code in healthysig.Rmd to serve its original purpose rather than commenting out the code.

Sounds like you've fixed fieldworldanalysis_samara.Rmd though!

[Omabekee]

Thank you so much for the feedback @lwaldron I've made an attempt to read through the paper, but I'm encountering difficulty in locating Experiment 10 within the study.

Could you please provide some guidance on where I can find Experiment 10 within the paper?

Here's the link: https://zenodo.org/records/7622129