select few values from a vector randomly
显示 更早的评论
v1 = [3 4 7 14 15 18 23 25 28 31 34 36 37 38 39 40 42 44 46];
v2 = [1 2 5 6 8 9 10 11 12 13 16 17 19 20 21 22 24 26 27 29 30 32 33 35 41 43 45 47];
I have 2 vectors v1 and v2
v1 has 19 columns and v2 has 28 columns
I wanted to create a new vector v of size 25 with all elements of v1 and if the size of v is not 25 I need to select few numbers from v2 randomly so as to make the size of v = 25 and write it in a sorted order
采纳的回答
try this:
v1 = [3 4 7 14 15 18 23 25 28 31 34 36 37 38 39 40 42 44 46];
v2 = [1 2 5 6 8 9 10 11 12 13 16 17 19 20 21 22 24 26 27 29 30 32 33 35 41 43 45 47];
target=25;
matsise=numel(v2);
a=v2(randperm(matsise,target -length(v1)));
v=sort([v1 a],'ascend')
更多回答（1 个）
Tushar Behera
2023-2-1
编辑：Tushar Behera
2023-2-1
Are you looking for something like this
v1 = [3 4 7 14 15 18 23 25 28 31 34 36 37 38 39 40 42 44 46];
v2 = [1 2 5 6 8 9 10 11 12 13 16 17 19 20 21 22 24 26 27 29 30 32 33 35 41 43 45 47];
v1=unique(v1);
v2=unique(v2);
num1=numel(v1);
num2=numel(v2);
v=zeros(1,25);
v=[v1]
if num1<25
for i=(num1+1):25
index = randi(numel(v2));
randomElement = v2(index);
if ismember(randomElement,v1)
%do nothing
else
v(i)=randomElement;
end
end
end
v=sort(v)
2 个评论
Elysi Cochin
2023-2-1
编辑：Elysi Cochin
2023-2-1
Tushar Behera
2023-2-1
take a look at the edited answer
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