Export lens explorations and dashboard widgets as images, or as Microsoft® Excel® (.xls) or comma-separated values (.csv) files. This feature downloads the results of a displayed query (or step). Now you can share explorations and filtered data in other useful formats.
To set up, assign users a permission set that includes Download Wave Analytics Data. Users with the permission see download options when they select Download from a dashboard widget.
Or, from a lens, select Share and then Download.