
1. Re: What is Logarithmic Scale on Axis of Tableau
David Li Oct 20, 2016 6:04 AM (in response to ra.sae.0)1 of 1 people found this helpfulIn a logarithmic scale, the axis marks increase by factors of 10. In contrast, in a standard linear scale, the axis marks increase by a factor of 1. So if you have two points on a logarithmic scale, one at tick 1 and one at tick 2, the mark at tick 2 has a value 10 times larger than the other mark.
A great example of this is the Richter Scale, which is a logarithmic measure of earthquake intensity. A quake that's 2 on the Richter Scale is 10x more powerful than a 1. A 3 is 100x more powerful than a 1. And so on.
Here's a nice overview of when to use log scales: http://datadrivenjournalism.net/resources/when_should_i_use_logarithmic_scales_in_my_charts_and_graphs

2. Re: What is Logarithmic Scale on Axis of Tableau
ra.sae.0 Oct 20, 2016 9:22 AM (in response to David Li)Thanks David. That helped me a lot I will try on my data and see how it looks

3. Re: What is Logarithmic Scale on Axis of Tableau
David Li Oct 20, 2016 10:19 AM (in response to ra.sae.0)1 of 1 people found this helpfulYou're welcome! Use logarithmic scales sparingly, though. In 99% of situations, they aren't good practice.