How to do a baseline correction

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?

[David Hill]

Looks like you know how exactly how the baseline needs to be adjusted. Just subtract the linear adjustment from your power array.

Answer 1

[Rik]

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')

[Hassan Nawazish]

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.