logarithmically spaced vector in a certain range
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How to create a logarithmically spaced vector say from values 3 to 10? Thank you!
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Azzi Abdelmalek
2014-10-3
编辑：Azzi Abdelmalek
2014-10-3
pas=0.1
t=log(3):pas:log(10)
out=exp(t)
%or
n=10 % number of samples
out=exp(linspace(log(3),log(10),n))
5 个评论
Nuchto
2014-10-3
Azzi Abdelmalek
2014-10-3
What do you mean?
Nuchto
2014-10-3
Azzi Abdelmalek
2014-10-3
n=10 % number of samples
out=log(linspace(exp(3),exp(10),n))
Nuchto
2014-10-3
更多回答（2 个）
Nathan Porter
2017-4-7
Like Marco, I would suggest using logspace. For example,
logspace(1,3,10)
creates a vector of 10 logarithmically spaced values between 10^1 and 10^3. If you instead want the bounds to be determined by a value and not the exponent, I generally use the following:
logspace(log10(3),log10(10),10)
This will create a vector of 10 logarithmically spaced values between 3 and 10.
1 个评论
Johann Martinez
2021-3-15
Thank Nathan, but what if I have a, b values equals to 0, 0.97, for example?
I mean, the logspaced vector is full of NaN, because of the negative logarithm...
thanks in advance
Marco
2014-10-3
1 个投票
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