picking numbers with specific difference in matlab
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Usama Bin Khalid
le 15 Mar 2021
Commenté : Usama Bin Khalid
le 15 Mar 2021
I have a data set...like say CAD from 212 to 550 say with a differnce of 1 and have corresponing SA values to these CAD values
But I want to pick numbers at a specific distance and in a specific sequence ..like 212,212.3,212.7,213,213.3,213.7.....so that later on i can interpolate the SA values on these CAD values.
How can i do that!! if there was single difference between numbers that would be simple as i did here picking data with a differenc of 0.5:
CAD= data(:,1);
SA= data(:,2);
CADQ=CAD(1):0.5:CAD(end);
vq = interp1 (CAD, SA, CADQ);
here i was able to pick 212,212.5,213,213.5....and was able to interpolate SA on these CAD values.
now how can i do that..picking CAD data in the sequence 212,212.3,212.7,213,213.3,213.7,214,214.3.....
1 commentaire
Rik
le 15 Mar 2021
I don't understand your question well enough to answer it, but it sounds as if ismember will be helpful.
Réponse acceptée
Steven Lord
le 15 Mar 2021
One way is to take advantage of implicit expansion.
x = 212:215;
y = [0; 0.3; 0.7];
z = reshape(x+y, 1, [])
5 commentaires
Rik
le 15 Mar 2021
Create an array where you repeat 0.3 0.5 enough times, set your starting offset as the first value and then use cumsum to calculate the cumulative sum.
x=repmat([0.3 0.5],1,5)
x(1)=213
x=cumsum(x)
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