Hi, I want to create a matrix based on a vector. It is difficult to describe the issue for me in english. Here is an example. Suppose I have an array([3, 6, 8, 12]), I want to create a range based on each element. In this exampe, let us say want to create 4 number with step 2, so I will have [3, 6, 8, 12 5, 8, 10,14 7, 10,12,16 9, 12,14,18] It is a 4 by 4 maxtric in this example. My original array is quite large. but the range I want to create around the number is not big, it is about 30. Does anyone know how to do this efficiently? Thanks Frank _________________________________________________________________ Send e-mail faster without improving your typing skills. http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_1...