error in subtracting
显示 更早的评论
I have a code
if Sparse_Conc_Index>=1
---------
---------
---------
Class_Image = (Image_Path);
figure,imshow(Class_Image)
else
msgbox('Invalid Image ','ALERT')
end
if i do
F=1-Sparse_Conc_Index
i get
F = 5.1341e-011
please tell how to get F as zero
采纳的回答
Walter Roberson
2012-6-27
0 个投票
If F = 1 - Sparse_Conc_Index is positive, then Sparse_Conc_Index >= 1 is false, so your "if" should not be true.
Your problem then reduces down to why Sparse_Conc_Index is not at least 1, which is something we do not know as you do not show how you calculated Sparse_Conc_Index .
更多回答（1 个）
Andreas Goser
2012-6-27
0 个投票
The point is that 5.1341e-011 IS actually almost zero. It depends now on your application what is the best approach. Very often comparisions are made in a way that you don't compare with ==, but with a tolerance.
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