How to remove vertical lines from the graph,produced by matlab????

[Vinayak]

can u please provide the matlab code of this graph rajat

[Simon Chan]

I guess the points in the plot are not arranged in a correct order. So it goes from upper to the lower curve and vice versa.

[Adam Danz]

It looks like the polarity of your signal is occasionally flipping. Assuming the signal is initially analog and passing through an analog-to-digital converter, you may be able to fix this for future data by tinkering with the A:D converter or during down the gain of the analog signal.

You can also fix this in post-processing (in MATLAB) if you can asssume that the polarity shouldn't suddenly switch.

The rule you would follow would be that if s(n+1) has a different sign than s(n) and s(n) is not sufficiently near 0, then flip the sign of s(n+1), where s is your signal.