How to efficiently Assign Value to column vector?
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balandong
am 23 Jul. 2017
Kommentiert: balandong
am 23 Jul. 2017
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 Kommentare
Image Analyst
am 23 Jul. 2017
Bearbeitet: Image Analyst
am 23 Jul. 2017
It would be easier for people to help you if you attached patients.mat. Then they could run your code.
Akzeptierte Antwort
Geoff Hayes
am 23 Jul. 2017
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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