Hi Gina,
If I understand your question correctly, it sounds like you are trying to plot some data that you have saved in a file. I am assuming that this data is in the form of X and Y values.
If this is correct, the easiest solution would be to use an XY-Graph in LabVIEW. I would start by using LabVIEW's File I/O VIs to load the data into an array or even a string indicator. You can then parse the data that you need and separate it into two arrays, one for X values and one for Y values. You can then bundle these two arrays together and feed the resulting cluster into an XY-Graph.
I have attached an example that may help to point you in the right direction when it comes to the actual programming.
I hope this helps!
Matthew C
Applications E
ngineer
National Instruments
