How to get equations of plots from this image ?

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RuiQi
RuiQi on 16 Jan 2017
Commented: KSSV on 16 Jan 2017
How to get equation of each plot from this image ? I want to replot it. Any app that i can use ?
I used the app provided by KSSV but I got a curve that isnt as smooth as the original one. Can anyone suggest how I can smoothen the curve ? I tried fitcurve but it doesn't look right at all

Accepted Answer

KSSV
KSSV on 16 Jan 2017
  2 Comments
KSSV
KSSV on 16 Jan 2017
You take more number points....you can smooth it using spline

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