sum every 5 rows of a column, Is the part of code right
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I am trying to sum every 5 rows of a column, Is my part of code right
instdec = (instdec_t+instdec_d)/2;
startdec1 = (instdec >= 0.25*overalldec);
startdec2=zeros(npts,1);
while decpt==1
for j = 2:npts-4
startdec2(j) = sum(startdec1(j:j+4));
if startdec2(j)== 5
decpt=j-1;
break
end
end
I keep getting wrong answers, the second row becomes 2, and everything else is zeros
I would appreciate any support since I am very new to matlab
2 Comments
Jan
on 17 Jun 2013
I've applied a more readable indentation. Now it is obvious that an end is missing.
The purpose of your code is not clearly explained. All we have is the code you have shown here. Then it is impossible to guess, if it satisfies your needs. Please add a detailed description of the aim of the program - by editing the original question, not as comment and not as answer. Thanks.
Accepted Answer
Andrei Bobrov
on 17 Jun 2013
Edited: Andrei Bobrov
on 17 Jun 2013
startdec2 = sum(reshape([startdec1;zeros(mod(-numel(startdec1),5),1)],5,[])).';
ADD
startdec1 = rand(42,1) < .7;
b = conv(startdec1,ones(5,1),'valid');
decpt = find(b == 5,1,'first')-1;
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