shiny: add help to install DT, shiny, & shinycssloaders if not installed

StatisticsNZ / simplevis

Simple visualisation with ggplot2 and leaflet wrappers

https://StatisticsNZ.github.io/simplevis

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shiny: add help to install DT, shiny, & shinycssloaders if not installed #410

Closed davidhodge931 closed 2 years ago

davidhodge931 commented 2 years ago

  if(any(c("shiny", "shinycssloaders", "DT") %in% utils::installed.packages() == FALSE)) {
    stop("Please ensure shiny, shinycssloaders and DT packages are installed")  
  }

davidhodge931 commented 2 years ago

Don't do this - too slow