select numbers based on different probabiltiies

2018 12 4
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更新时间：2018 12 4
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I have an event that happens at a prbability of 1E-06. I want Matlab to return me 1 if that event happens and 0 otherwise. Rand gives me a number upto four decimal places. Could you folks help me come up with a solution.
Thank you

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Bruno Luong
Bruno Luong 2018-12-4
编辑：Bruno Luong 2018-12-4
Rand gives me a number upto four decimal places
Nope RAND returns double, i.e., more than 15 significant decimals.
Don't be fool by what display on your screen and what is stored internally.
messi
messi 2018-12-4
Thanks for that quick response. Very basic question. How can I force matlab to output random number upto 6 or 7 significant digit.
Will this code work?
ran = rand;
if (rand<1E-05)
selec=1;
else
selec=0;
end
Image Analyst
Image Analyst 2018-12-4
编辑：Image Analyst 2018-12-4
Yes. But you don't need the ran=rand line if you're never going to use ran. To see more digits:
format longG
Bruno Luong
Bruno Luong 2018-12-4
编辑：Bruno Luong 2018-12-4
No this code returns 1 with 1e-5 probability chance, not 1e-6 as you have stated.
ran = rand;
if (rand<1E-05)
selec=1;
else
selec=0;
end

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