# logspace with gap of half

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Megha 2019년 1월 6일
댓글: Megha 2019년 1월 6일
yt = logspace(-3,4,8);
This gives 0.001, 0.01, 0.1,1,10,100,1000,10000
However, I want
0.001, 0.005, 0.01,0.05, 0.1, 0.5, 1,5, 10,50, 100,500, 1000,5000, 10000
How Can i get that?
Can anyone help?

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### 채택된 답변

Stephen23 2019년 1월 6일
편집: Stephen23 2019년 1월 6일
>> V = logspace(-3,4,8);
>> V = [V;5*V];
>> V = V(1:end-1)
V =
0.001 0.005 0.010 0.050 0.100 0.500 1.000 5.000 10.000 50.000 100.000 500.000 1000.000 5000.000 10000.000
Note that the values you requested are not evenly spaced in log-space (because the power difference between adjacent values alternates between ~0.30103 and ~0.69897). Evenly spaced values would simply be:
>> V = logspace(-3,4,15)
0.0010000 0.0031623 0.0100000 0.0316228 0.1000000 0.3162278 1.0000000 3.1622777 10.0000000 31.6227766 100.0000000 316.2277660 1000.0000000 3162.2776602 10000.0000000
where the difference in powers between adjacent values is always exactly 0.5.
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Megha 2019년 1월 6일
Yes, It woked!
Thnak you so much @Stephen Cobeldick

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