How to efficiently Assign Value to column vector?
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Dear Coder, Any idea how to remove the two for loop to assign multiple value to a column vector? Really appreciate for the help.
The patients.mat is build-in mat file in MATLAB 2017
load patients
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[tf,Ioc_Alert_LessThree] = find (ismember(Smoker, 1));
for i = 1: length (tf)
M (i,1) = Height (tf(i));
end
[tgf,Ioc_Alert_two] = find (ismember(Smoker, 0));
for i = 1: length (Ioc_Alert_two)
M (i,2) = Height (tgf(i));
end
M(M == 0) = NaN;
NonSmoker(Ioc_Alert_two == 1) = 0;
Yes_Smoker(Ioc_Alert_LessThree == 1) = 1;
scatter ( M (1:34,1),Yes_Smoker)
hold on
scatter ( M (:,2),NonSmoker)
2 个评论
Image Analyst
2017-7-23
编辑：Image Analyst
2017-7-23
It would be easier for people to help you if you attached patients.mat. Then they could run your code.
balandong
2017-7-23
采纳的回答
Geoff Hayes
2017-7-23
balandong - your first for loop is
for i = 1: length (tf)
M (i,1) = Height (tf(i));
end
Try replacing this with
M = zeros(length(tf),1);
M(1:length(tf)) = Height(tf(1:length(tf)))
Something similar can be done for the second for loop too.
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