This function checks that the PHEN file is present, given the base file path, stopping with an informative message if the file is missing. This function aids troubleshooting, as various downstream external software report missing files differently and sometimes using confusing or obscure messages.
The base file path (excluding
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# to require "data.phen", run like this: # (stops if file is missing) # require_files_phen("data") # The following example is more awkward # because package sample data has to be specified in this weird way: # check that the samples we want exist # get path to an existing phen file file <- system.file("extdata", 'sample.phen', package = "genio", mustWork = TRUE) # remove extension file <- sub('\\.phen$', '', file) # since sample.phen file exist, this will not stop with error messages: require_files_phen(file)
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