in matlab programing we can easily access and manage data of array types. but in rapidminer i don't know ho can access an manage them . for example b=a(1:10) expresion get 1 to 10 elements of a variable and put them to b variable . very easy accec and creat array . but in rapidminer i don't know how this performed . or i want to craet an attribute with increasing number elements such as 1 2 3 4 5 . . . as attribute elements but i dont know how creat them . can any one help me ?