Uploading Files In Shiny

Kevin Feasel



Steph Locke explains how to use lapply() and fread() to validate and combine multiple uploaded files in R:

In shiny, you can use the fileInput with the parameter multiple = TRUE to enable you to upload multiple files at once. But how do you process those multiple files in shiny and consolidate into a single dataset?

The bit we need from shiny is the input$param$fileinputpath value.

Read the whole thing.

Related Posts


John Mount explains the vtreat package that he and Nina Zumel have put together: When attempting predictive modeling with real-world data you quicklyrun into difficulties beyond what is typically emphasized in machine learning coursework: Missing, invalid, or out of range values. Categorical variables with large sets of possible levels. Novel categorical levels discovered during test, cross-validation, or […]

Read More

R 3.4.4 Now Available

David Smith notes that R 3.4.4 is now generally available: R 3.4.4 has been released, and binaries for Windows, Mac, Linux and now available for download on CRAN. This update (codenamed “Someone to Lean On” — likely a Peanuts reference, though I couldn’t find which one with a quick search) is a minor bugfix release, and shouldn’t cause […]

Read More