Number[] numbers = new Number[getRowCount()];
for ( int row = 0; row < getRowCount(); row++ ) {
numbers[row] = ( (Number) getValueAt( row, col ) ).doubleValue();
}
ac.addValues( numbers );
ac.setColour( getColor( col ) );
if ( linechartwidth != null ) {
ac.setWidth( linechartwidth );
}