How did you produce this chart? Since you failed to attach any LabVIEW code that would help us to help you, we can only "guess". Somewhere there must be "points", perhaps even an "array of points". Charts deal with "sampled data", often using the LabVIEW "Waveform" data type, where you can find functions in the "Waveform" Palette on the Block Diagram that might be able to do what you want. Certainly learning about Arrays (which are a component of a Waveform), including how to isolate "pieces" from the Array, maybe learning more about Charts, including how to use Cursors to mark "beginning" and "end" points on a Chart, then use an Array function to "cut out" some data for analysis, could be useful.
Here's an idea -- follow the suggestion given to many New Members of the Forum and attach your LabVIEW code when you ask a question. This helps us "see what you know" and help you learn LabVIEW.
Bob Schor
