function minard( options ) {
	var opts;
	var err;

	if ( arguments.length > 0 ) {
		opts = {};
		err = validate( opts, options );
		if ( err ) {
			throw err;
		}
		if ( opts.data ) {
			if ( !hasOwnProp( minardData, opts.data ) ) {
				throw new RangeError( format( 'invalid option. `%s` option must be one of the following: "%s". Option: `%s`.', 'data', objectKeys( minardData ).join( '", "' ), opts.data ) );
			}
			return copy( minardData[ opts.data ] );
		}
	}
	return copy( minardData );
}
Returns datasets for Charles Joseph Minard's cartographic depiction of Napoleon's Russian campaign of 1812.

@param {Options} [options] - options object
@param {string} [options.data] - dataset name
@throws {TypeError} must provide an object
@throws {TypeError} must provide valid options
@throws {RangeError} must provide a recognized dataset name
@returns {(Object|ObjectArray)} dataset(s)

@example
var data = minard();
// returns <Object>

@example
var data = minard({
    'data': 'army'
});
// returns <ObjectArray>