Hello ! I'm a newbie at prog. matlab I've got a problem regarding calculation with a vector. I have a vector with single data, and it have got a floating zero-value in the middle of the vector. The first data value to the floating zero-point will I reduce by a constant. And then from the floating zero-value i will not do anything, just keep the data from the vector. Any suggestion of how to solve this ?? I'm really happy, if someone would have some ideas Thanks Jakob