Please help me vectorize my loop to construct query vector from sample points
1 view (last 30 days)
Show older comments
I want to construct a vector xq (the query vector) from xs (sample point vector) for use in interp1. Ideally, xq would:
- contain all element from xs
- evenly spaced when between any xs(i) and xs(i+1)
- xq(i+1)-xq(i)<t always true for a given threshold t.
- for xs(i+1)-xs(i)<t already, no xq between the 2 points (but just on xs(i+1) and xs(i))
I cannot think of any code to achieve all of 4 without some kind of loop. Does anyone have a good idea? Thanks in advance
Here is a loop version I wrote. I am sorry if I didn't prase my original question clearly.
t=2;
xs=cumsum(10*rand(1,10))
xsdelta=diff(xs)
xq=[];
for i=1:length(xsdelta)
xq=[xq,xs(i),nan([1,floor(xsdelta(i)/t)])];
end
xq=[xq,xs(end)]
xq=fillmissing(xq,"linear",2)
0 Comments
Accepted Answer
Bruno Luong
on 13 Apr 2021
Edited: Bruno Luong
on 13 Apr 2021
xs=cumsum(ceil(10*rand(1,10)))
t=pi;
p=cumsum([0 ceil(diff(xs)/t)]);
xq=interp1(p,xs,0:p(end))
More Answers (0)
See Also
Categories
Find more on Multirate Signal Processing in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!