Hello, I've derived my data from a software and it gives the data in a sequential format. It's a 2-column matrix in which the first column is X and the second one is Temperature of that point. X starts from 0 to 0.2, then I have another 0 to 0.2 and this pattern repeats. The first X from 0 to 0.2 and its pertaining T are corrosponding values for first time step and the next one is for the next time step, ... . The number of rows are not fixed for every iteration and total number of rows are unknown. I want to plot X vs T for every time step. Does anyone have an idea for defining the matrix?