Fun and random bits of useful code
combine_excel_workbook file provides code to combine csvs into xlsx (matching indexed filenames) in prep to run this over >1000 csvs so expecting to funtion-ise at some point help from https://stackoverflow.com/questions/27713310/easy-way-to-export-multiple-data-frame-to-multiple-excel-worksheets
spatial_density plots world map + counts of gridded mock data
used https://www.r-spatial.org/r/2018/10/25/ggplot2-sf.html as guide for map
netcdf_learning includes some code for basic manipulation of netcdf files (specifically spatio-temporal data). Initial how-to from https://rpubs.com/boyerag/297592.
aus_centred_robinson has some nightmare code to make an Aus-centred Robinson-projected map in ggplot. Help from https://stackoverflow.com/questions/56146735/visual-bug-when-changing-robinson-projections-central-meridian-with-ggplot2 and https://github.com/valentinitnelav/valentinitnelav.github.io/blob/master/gallery/Pacific%20centered%20world%20map%20with%20ggplot.R. 
NOAA_NCEI has code to convert a dataframe of data and metadata to the NOAA NCEI Paleo text format. Code is not clever, but may save someone some time in future. This was developed to support a forthcoming database paper which I'll link here when it is published.
ConcatenateCsv is for, if some reason, you need to concatenate a shed-load of csvs.
FillUnderLine is if you want to make some pretty timeseries squiggly lines which are shaded. 
fireHistories is to extract fire frequency data from the DBCA-060 database - developed for this preprint
CalculateUThCorrections does just that, using Pieter Vermeesch's great IsoplotR package. Shared here, because I found it quite complicated to figure out, and then had a stumble at the very end with uncertainties that were double what I expected - thanks Pieter for explaining the intricacies of the read.data function!
Here, we are replicating the calculations presented in Treble, P.C., Baker, A., Abram, N.J., Hellstrom, J.C., Crawford, J., Gagan, M.K., Borsato, A., Griffiths, A.D., Bajo, P., Markowska, M., Priestley, S.C., Hankin, S., Paterson, D., 2022. Ubiquitous karst hydrological control on speleothem oxygen isotope variability in a global study. Commun Earth Environ 3, 1–10. https://doi.org/10.1038/s43247-022-00347-3 (see Supllementary Table 5).