check_availability: Check if list items are empty

In eufmdis.adapt: Analyse 'EuFMDiS' Output Files via a Shiny App

Check if list items are empty

Description

The function argument is a list of data frames that are required for some subsequent analysis. If any of the data frames are empty (i.e. the data have not been uploaded to the app), a message is returned as HTML code listing the names of the required data frames (= names of list items).

Usage

check_availability(list_data)

Arguments

list_data

Named list of data frames

Details

In the ADAPT app, individual analyses can only be performed if the necessary output files are uploaded. If certain files are not uploaded, the app produces empty data frames. In the app, the function check_availability() is used with the necessary data frames to check if they have been uploaded and displays a message of the form "To generate this analysis, please upload the following reports: x, y" otherwise.

Value

Possibly empty HTML text, listing names of required data frames.

Author(s)

Ian Kopacka

eufmdis.adapt documentation built on Sept. 12, 2023, 9:06 a.m.