How to adjust data?

Hi,

I need help. I had get data of signal but it doesnt seems good. I want to have straight signal with limit 200 on below and up to 1100 on the top, by only adjusting him not cuting.

I tried something like this .

for x 1:5000005
if x<40000
    wspolrzedna(x)=wspolrzedna(x)-100;
end
if x<100000 & x>40000
    wspolrzedna(x)=wspolrzedna(x)+200;
end
if x<300000 & x>100000
    wspolrzedna(x)=wspolrzedna(x)+300;
end
if x<500000 & x>300000
    wspolrzedna(x)=wspolrzedna(x)+500;
end
if x<750000 & x>500000
    wspolrzedna(x)=wspolrzedna(x)+750;
end
if x<1000000 & x>750000
    wspolrzedna(x)=wspolrzedna(x)+1000;
end
end

I get only something like this. I please for help. Thanks. (The plots plots are built in time scale , the code was write using samples. I have 5000005 samples which i want adjust )

Answer 1

[Star Strider]

It would be easiest to use the detrend function:

t = linspace(0, 100, 1E+4);                         % Create Data
s = sin(2*pi*t) + 0.001*(t-50).^2;                  % Create Data

figure
plot(t,s)
grid

s_det = detrend(s, 3);                              % Detrend Using 3° Polynomial

figure
plot(t, s_det)
grid

.

[Kacper Suchecki]

Thanks. It's work pretty well.

[Star Strider]

As always, my pleasure!