You can compare two graphs to determine the difference in the distributions of one parameter along the other parameter. For example, in your project you may be required to change the cross section of a pipe according to a certain rule, or graph. To analyze the distribution, you can compare the actual distribution of the cross section along the length of the pipe to the desired distribution, which is defined by a graph feature. Once you have measured the difference between the two graphs, you can use this parameter in Creo Behavioral Modeling to optimize the difference and obtain the most desired distribution.