data replace with NaN

2021 6 2
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Hi ,
I think this is simple, but I am struggling to do this.
I have a data set as shown in the image, but with some bad data. I want to replace the data between the two data cursors with NaN. Appreciate your thoughts.
Thank you

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Hi,
I would do in the following way:
y(x>=2.519e6 & x<=2.52e6) = NaN;
In this way I overwrite the current values of y vector with NaN ones in the x specified range (I consired your plot to define the x range). The expression x>=2.519e6 & x<=2.52e6 returns a logical array, that identifies the indices of y vector, that I want to overwrite.
Hope this helps.

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