Use popular 'grammar of data' syntax to filter and subset your two-dimensional JavaScript arrays and more. Here's how to use Arquero for data wrangling in Observable JavaScript and Node.js.

Each table column will contain a header row to help you sort and filter your data efficiently. ... To delete the table columns, right-click the table cell to open the options list.

The table's properties display, including the columns. You click a column and change the heading to edit the current columns. To add a new column, click "New" and type a heading for the column.