Multi-Column Sorting

In dtsmartr: Interactive Virtualized Data Explorer Grid Widget

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

dtsmartr supports modern, spreadsheet-like multi-column sorting natively by interacting with column headers.

1. Single Column Sort

Clicking directly anywhere on a column header card triggers sorting: - First Click: Sorts the column ascending (↑). - Second Click: Sorts the column descending (↓). - Third Click: Clears the sort state for that column.

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2. Multi-Column Sort Chain

To sort by multiple columns sequentially (e.g., sort by cyl first, then by mpg within each cylinder class): - Click the first column header (e.g., cyl) to set the primary sort. - Hold Shift and click the second column header (e.g., mpg) to append it to the sort chain. - The UI displays numbered emoji badges (e.g., 1️⃣ ↑, 2️⃣ ↓) next to the column names to show the sorting priority and direction. - The active sort chain is also printed in the grid's top toolbar (e.g., ↕ cyl asc (1) -> mpg desc (2)).

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3. Clearing Sorts

• Clear a Single Column: Simply Shift + Click the sorted column header until its sort direction indicator disappears.
• Clear All Sorts: Click the Clear sort button (refresh icon) inside the top-right toolbar.

4. Live Multi-Column Sorting Example

Try sorting by cylinders (cyl) first, and then sorting by miles-per-gallon (mpg) inside the cylinder groups:

library(dtsmartr)
dtsmartr(mtcars)

dtsmartr documentation built on July 16, 2026, 5:08 p.m.