How to solve the plot if shown twice than original data

[Julian_prince]

Dear sir,

I am kunvar yadav, i am using Labview software.

Here i going to plot multi plot in single plot. but the problem is it that i am applying the data of 18 days, but in output result shows data of 36 days.

Here i have attache original file data file and programme.

[altenbach]

Use a graph instead of a chart (or run the program only once). Whenever you run the program using a chart, the same data is appended to the chart history, duplicating the data.

(This is a plain LabVIEW question. Why did you post it in the Mathscript forum?)

Many things could probably be done simpler....