For-loop show an element which has format number different with others in an array?

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Khanh
Khanh 2014-10-17
评论： Khanh 2014-10-20
Hi,
Could someone explain a strange thing happend in my simple code?
numwl='11';
chieuchimd='1';
dwl=str2double(chieuchimd)/(str2double(numwl)-1);
mwl=[0:dwl:str2double(chieuchimd)]*1000;
text3={};
for i=1:str2double(numwl)
text3=[text3;{sprintf('%d',i-1)} {sprintf('DN%d',i-1)} {sprintf('%d',mwl(i))}]
end
When for-loop at i=4, the 3rd colum of the cell had a number that its format different with others.
I also search but had no answers.
Thanks

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Thorsten
Thorsten 2014-10-17
This is because mwl is not exactly 300 but 300 + 5.6843e-014.
Either use
mwl = round([0:dwl:str2double(chieuchimd)]*1000);
or
mwl = [0:dwl*1000:str2double(chieuchimd)*1000];
  1 个评论
Khanh
Khanh 2014-10-20
Thank you so much. My number array is exactly with interval is 100 (0:100:1000). But I also solved the problem by using your code. Thanks again :D.

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