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save values in array in a loop

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Sana Tayyeb
Sana Tayyeb 2015-3-21
回答： Anil Kumar 2022-6-22
I want to save a value calculated inside a loop in an array. Is it possible? for example:
for i=1:10
s=a+b;
a(i)=s;
end
a
ans=
a=[23 45 678 21 34 134 34 56 11 34]
how to save s in an array so that this loop give an array containing the calculated values?
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Sana Tayyeb
Sana Tayyeb 2015-3-22
this loop is caluculation meanGL. after loop ends i can only access meanGL of last spot .i want to save meanGL of all spots in a way that after calculation i can access meanGL of all spots.
for k = 1 : numberOfSpots
thisSpotPixels = SpotMeasurements(k).PixelIdxList; % Get list of pixels in current blob.
meanGL = mean(i(thisSpotPixels)); % Find mean intensity
end
Thanks in advance
Debasish Roy
Debasish Roy 2018-2-3
first of all make a script like this, then run it. You will get your answer i hope.
clear all clc
x = []; y = []; k =[]; f = []; for i= 1:4 fprintf('Enter the temperature of day %d \n' ,i ); s = input(' in celcius '); x(i) = s; y(i) = i; end k = x+273; f = x*9/5 + 32; plot( y, x , '-R', y , f ,'-G' ,y ,k, ' -B')

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回答（2 个）

Konstantinos Sofos
Konstantinos Sofos 2015-3-21
x = [] % initialize your matrix/vector
for i=1:10
% do something useful
s=a+b
x = [x,s];
end
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Konstantinos Sofos
Konstantinos Sofos 2015-3-21
More or less I agree with you...but here we do not have any performance issue question...just a way to keep the values ;)
hemasai proddutur
hemasai proddutur 2021-7-7
d = 0;
for t=1:10000
d = d+0.1;
end
i want to store the values in array in the loop [0.1 -----------------1000]

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Anil Kumar
Anil Kumar 2022-6-22
may be helpful for begginers
x1=[];
x2=[];
a=[2 4 6 7 3];
b=[1 9 7 5 8];
for ii=1:5
s=a(ii)+b(ii);
x1=[x1,s];%output in a row
x2=[x2;s];%output in a column
end

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