I am working with a long term sub-tidal ecological data set from California's Channel Islands.
I would like to generate a column in my data frame that shows the unique trip number for the survey year. There are usually around 10 survey trips per year and each trip is typically 5 days (Monday-Friday). There are some exceptions including day trips and weekend trips. I am mostly concerned with overnight trips (ok to exclude daytrips and weekend dates). Trips are usually conducted on a biweekly basis during the summer months so counting consecutive days would be a good way to establish what constitutes a trip. This will help me filter my data frame by year/trip number in order to build an itinerary for each trip.
My eventual goal is to make an interactive map in my shiny app that shows the route these trips took and to include tables with the buoy data for each day on a given trip. This will then be linked to forecast data to look for past trips with similar oceanographic and meteorological conditions to help with trip planning. To get an idea of what this app looks like visit my current version here: http://188.8.131.52/
The data I am using is stored as a gist here: https://gist.github.com/cullen-molitor/a80235fed396780245fe12f84093135f
Here is a bit of code to get started but I am at a loss for what to do next. I tried looking at some other examples but nothing seems to quite fit what I am trying to do and I am not clever enough to alter them.
library(dplyr) Visit_Dates <- read_csv("Visit_Dates_Filtered.csv") %>% group_by(SurveyYear) %>% mutate(Trip_Number = NEED_HELP_HERE)
Some kind of relevant links that I couldn't make work are:
SiteNumber SiteName IslandName SurveyYear Date Day_of_Week Month Trip_Number 12 Cathedral Cove Anacapa Island 1982 8/16/1982 Monday August 1 13 Landing Cove Anacapa Island 1982 8/17/1982 Tuesday August 1 9 Scorpion Anchorage Santa Cruz Island 1982 8/18/1982 Wednesday August 1 6 Rodes Reef Santa Rosa Island 1982 8/19/1982 Thursday August 1 1 Wyckoff Ledge San Miguel Island 1982 8/20/1982 Friday August 1 11 Admirals Reef Anacapa Island 1982 8/30/1982 Monday August 2
Any help would be greatly appreciated.