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Calculating time in a logarithmic scale

  1. Jul 27, 2015 #1
    Hi Everyone,

    I have a question about logarithmic sampling. I think I might have to go and review my Z-transforms, but maybe not.

    The reason I am doing this is because I am automating equipment which records the data over time, but I want the sampling to be done logarithmically.

    If I have an internal of 1s, and I want to sample logarithmically (is that a word?), how do I calculate the next sample time?

  2. jcsd
  3. Jul 27, 2015 #2


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    You have all the freedom you want, but is it really what you want ?
    For example: 1, 2, 4, 8, 16, 32, ... would be equidistant on a time scale that is plotted logarihmically. But so would
    1, 10, 100, 1000, 10000, ...
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