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Import data from a file

Source: R/import-file-ext.R
import-file.Rd

Let user upload a file and import data

Usage

import_file_ui(
  id,
  title = "",
  preview_data = TRUE,
  file_extensions = c(".csv", ".txt", ".xls", ".xlsx", ".rds", ".fst", ".sas7bdat",
    ".sav"),
  layout_params = c("dropdown", "inline")
)

import_file_server(
  id,
  btn_show_data = TRUE,
  show_data_in = c("popup", "modal"),
  trigger_return = c("button", "change"),
  return_class = c("data.frame", "data.table", "tbl_df", "raw"),
  reset = reactive(NULL),
  read_fns = list()
)

Arguments

preview_data

Show or not a preview of the data under the file input.

file_extensions

File extensions accepted by shiny::fileInput(), can also be MIME type.

layout_params

How to display import parameters : in a dropdown button or inline below file input.

read_fns

Named list with custom function(s) to read data:

  • the name must be the extension of the files to which the function will be applied

  • the value must be a function that can have 5 arguments (you can ignore some of them, but you have to use the same names), passed by user through the interface:

    • file: path to the file

    • sheet: for Excel files, sheet to read

    • skip: number of row to skip

    • dec: decimal separator

    • encoding: file encoding

    • na.strings: character(s) to interpret as missing values.