how to interpolate between 2 samples??

i want doing linear interpolation between 2 samples 170 and 230. how can i ??

 load ecg.m;
n=length(ecg);   
fs=360;
ORS1_on_off=[170 230];

Answer 1

[ANKUR KUMAR]

I am unable to understand your question completely. But I can guide you at some extent. Hope this helps you.

For 1D interpolation Suppose you have

A=[1 2 3 4 5 6];
B=[20 25 65 85 95 74 75];

and you want to interpolate A on 2.5, then you can use

interp1(A,B,2.5)

For 2D interpolation

latitude=[10:20];
longitude=[65:95];
rainfall=randi(75,11,31);

And we have to interpolate the rainfall data on 12.5 lat and 70.5 lon. Then you can use

   interp2(latitude, longitude, rainfall',12.5,70.5)

[Good mind]

thank you ANKUR,i have an ecg signal its first qrs complex is between 170 and 230, then i want to eliminate this qrs complex by linear interpolation between 170 and 230 that is to say

(x1,y1) =(170,17.8445 ) and (x2,y2)=(230,7.2072)

[ANKUR KUMAR]

Do you want to find the correlation between (X1,Y1) and (X2,Y2)? Though, the correlation between any 2 points are either 1 or -1.