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Ben
Posts:
6
From:
Netherlands
Registered:
2/18/10
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Re: Shifting data
Posted:
Feb 18, 2010 9:49 AM
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Dear Jan Simon,
Thanks for your reply. I'm sorry for my explanation. But I have the solution.
function [x] = FuncFindTrig(signal, trig)
% Find point closest to trigger point (trig)
% find point closest to trig
B1 = abs(signal-trig);
[C,D] = min(B1);
% when first point is bigger than trig, use second point
B2 = signal>trig;
% sig1 = x>trx;
sig2 = B2(2:end) - B2(1:end-1);
B3 = find (sig2==1);
if B3(1)==1;
B3(1)= B3(2)+1;
else B3(1)=B3(1)+1;
end
UPx = B3(1);
LPx = B3(1)-1;
UPy = signal(UPx);
LPy = signal(LPx);
% a = delY/delX;
a = (UPy-LPy)/(UPx-LPx);
b = signal(LPx);
% y = ax+b;
x = LPx+(trig-b)/a;
end
This is my solution:
% shifting figures to same point xA and xB must be zero
Bsize= size(B);
% B2=B(xBtrig:end)
t= 1-xBtrig:1:Bsize(2)-xBtrig;
figure;
plot(t,B)
FuncHorline(trig);
FuncVertline(0);
It is of course only the display of the figure that needed to be changed, not the data as such.
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