One of the reasons it is helpful to attach code when you post here is that it enables us to judge where to tell you to begin. In your case, you need to learn more of the basics of LabVIEW. I recommend that you start by going to the first page of this Forum and doing (most of) the Tutorials in Getting Started with LabVIEW. Among other things, you'll learn how to get data into your program without having to ask the user to "Open Excel or Text File, copy the data, and paste it into the Input Array".
You will also learn how to work with Arrays in LabVIEW, and how LabVIEW uses loops, shift registers, and other techniques to allow you to "march through your data" processing it as you go. You will also be able to wean yourself from Express VIs, which (too often) serve as a "crutch" for beginners. Rather you'll use some of the analysis functions that ship with LabVIEW. You will also learn how LabVIEW handles data visualization, such as Graphs and Charts, and will be able to create the graphs that you desire.
Are there any good LabVIEW Developers in your school/company/institution? They are often willing to mentor someone who expresses an interest in spending the time and effort to learn LabVIEW. [I say "time and effort", but the graphical nature of LabVIEW means that it is kind of intuitive once you get the general idea ...].
Bob Schor
