MATLAB: Subtract very small value

subtract small values

when I subtract a very value small from another value. the answer remain the same as if I did not subtract any value for example if I subtract 1.9512e-005 from 1.5 the answer is 1.5 …how do I enforce the matlab to output the correct answer?

Best Answer

Use the format function. You may want to use format longE.

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MATLAB: Very small p value

Hi Micah, A couple things to try:

Set the format to long.

format long
[h,p] = chi2gof(histdata)

It may be that the p-value is really essentially zero, I mean if the p-value is 10^{-6}, are you really going to report that? You may as well just say p<0.001

Another thing is return the stats from chi2gof() and check that.

[h,p,st] = chi2gof(histdata);
1-chi2cdf(st.chi2stat,st.df)

Does that also just say 0?

MATLAB: How to make a binary image by specifying a threshold? for example more than intensity 200 be 1 and less than be 0

im2bw()

Or just

BW = YourImage > 200;

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Related Solutions

MATLAB: Very small p value

MATLAB: How to make a binary image by specifying a threshold? for example more than intensity 200 be 1 and less than be 0

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