Add records/year rug to OccDet plots

[AugustT]

Add Marks cool rug to the plots.
This needs us to update the plot.OccDet method and output the number of records per year in the OccDet object

[AugustT]

@mlogie it would be good to get this in some time. can you share the code with me?

[AJacksonMCS]

Tom, I've hacked together a way to do this in combination with a facet_grid, but it is very long-winded, clumsy and specific to my dataset (very much not generic). I've also added alpha transparency to the rug, based on the number of records/yr which gives an indication of temporal variation in sampling effort (over and above indicating years without records), which I think is quite effective. If this sort of thing could be built in (by a proper coder!) to plot.OccDet, that would be brilliant.

[AugustT]

@mlogie did you not do this as Well? Can you share your code here?

[mlogie]

@AugustT I did on a project, but it was a one-off. I'll dig out my code and see how easily I can integrate it into one of the plotting functions

[AugustT]

ThAnks Mark, as a minimum if you could paste your code in a comment here I think that would help @mlogie