how to interpolate between 2 samples??

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Good mind
Good mind 2017-11-29
评论： ANKUR KUMAR 2017-12-3
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];

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回答（1 个）

ANKUR KUMAR
ANKUR KUMAR 2017-12-1
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)
  2 个评论
Good mind
Good mind 2017-12-2
编辑：Good mind 2017-12-2
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
ANKUR KUMAR 2017-12-3
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.

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