dsv.format()

dsv.format(rows[, columns])

Formats the specified array of object rows as delimiter-separated values, returning a string. This operation is the inverse of dsv.parse. Each row will be separated by a newline (\n), and each column within each row will be separated by the delimiter (such as a comma, ,). Values that contain either the delimiter, a double-quote (") or a newline will be escaped using double-quotes.

If columns is not specified, the list of column names that forms the header row is determined by the union of all properties on all objects in rows; the order of columns is nondeterministic. If columns is specified, it is an array of strings representing the column names. For example:

var string = d3.csvFormat(data, ["year", "make", "model", "length"]);

All fields on each row object will be coerced to strings. For more control over which and how fields are formatted, first map rows to an array of array of string, and then use dsv.formatRows.