Calculating time in a logarithmic scale

[Natalie89]

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?

Thanks!

 

[BvU]

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, ...