Getting the area and circumference of XY graph

Hello
Please I need help as soon as possible with This Labview Code.
This code include drawing manually a circle on the XY graph to calculate the area and the circumference of it !
But I need an improve of this code to make it more beneficial, I want to find a way so the circle will be drawn automatically when I run the program and choose the the txt file for X & Y in a way to cover like at least 95% of the graph!!
Thank YOU
Attachments:
read data (1).vi ‏348 KB

Sure, here's the VI, though you can also drag and drop the .png into the block diagram.
BR:
Andrew
Andrew Valko
National Instruments Hungary
Attachments:
Circle Draw.vi ‏22 KB

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