finding a number in the vector equal or around a desired number

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Othman Alkandri
Othman Alkandri 2022-12-30
评论： Othman Alkandri 2023-1-2
I am trying to the from dleta_A vector a number equal to 3.1528 or two numbers rounded up and down for the desired number
V_breadth = 12;
d_Vd = 0:0.005:2;
V_Draft_min = 0.5;
V_breadth_min = 0.4*V_breadth;
V_breadth_max = 0.8*V_breadth;
for i = 1:1:length(d_Vd)
V_Draft_new(i) =V_Draft_min+ d_Vd(i);
tan_theta = (V_Draft - V_Draft_min )/(0.5*(V_breadth_max-V_breadth_min));
Vb(i) = V_breadth_min + (d_Vd(i).*(2/tan_theta));
dleta_A(i) = (V_breadth_min+ Vb(i)) *d_Vd(i)/2;
end
V_Draft_new
Vb
dleta_A

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采纳的回答

Image Analyst
Image Analyst 2022-12-30
Ran in:
Try this
% Create sample data
dleta_A = 4 * rand(1, 1000)
dleta_A = 1×1000
1.3165 0.9536 1.6464 3.0427 3.4164 2.8714 2.8714 1.5470 3.9519 3.3921 2.2466 3.1289 2.5613 3.5461 3.0159 3.7663 3.6834 1.4579 3.4715 1.1341 3.1148 3.3452 2.9969 0.6242 2.5960 3.9745 2.0811 1.2933 0.1543 1.7560
% Find element of dleta_A that is closest to 3.1528.
differences = abs(dleta_A - 3.1528);
[minDifference, indexOfMin] = min(differences)
minDifference = 0.0022
indexOfMin = 871
closestValue = dleta_A(indexOfMin)
closestValue = 3.1550

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