How to do a baseline correction

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Faezeh Manesh
Faezeh Manesh on 25 Sep 2019
Commented: Hassan Nawazish on 29 Jun 2020
Hello everyone,
I have an experimental data as shown in the figure, I need to do a baseline correction, in a way that the black line that I drew in the picture becomes horizental. Can any of you help me to do it in MATLAB?DSCdata1.png
  1 Comment
David Hill
David Hill on 25 Sep 2019
Looks like you know how exactly how the baseline needs to be adjusted. Just subtract the linear adjustment from your power array.

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Accepted Answer

Rik
Rik on 25 Sep 2019
You mean like a simple subtraction?
t=linspace(0,10,100);
bias=@(t) t/9;
P_fun=@(t) 0.1*(t-3).^2+sin(t/2)-0.85 +bias(t);
P=P_fun(t);
%subtract bias
P_new=P-bias(t);
plot(t,P,'b',t,bias(t),'k',t,P_new,'r')
  1 Comment
Hassan Nawazish
Hassan Nawazish on 29 Jun 2020
plot(ta,zeros(size(ta)),'r.-')
try this after plot command for your plot here ta is xaxis variable and you will get a horizontal baseline.'r' is representing the color.

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