Logarithmic scale

[danielost]

Add the logarithmic type of scale. Helpful when there is a large value range in a dataset.

There should be support for:

• Log-log plots: if both the vertical and horizontal axes of a plot are scaled logarithmically, the plot is referred to as a log–log plot
• Semi-log plots: if only the ordinate or abscissa is scaled logarithmically, the plot is referred to as a semi-logarithmic plot

Useful links:

• https://www.ibm.com/docs/en/cognos-analytics/11.1.0?topic=visualizations-logarithmic-scale
• https://www.youtube.com/watch?v=xgYalAy8oeg