Calculate the logarithm of the given number (num) to a given base.
This function returns the number l with
num == Math.pow(base,l)
The base to calculate the logarithm to.
The number to calculate the logarithm for.
Calculate the raster scale for a given logarithmic mapping.
Example (with adjustFactor=2):
If scale is 4.33, then the mapping is 1/2 (because 2^2 <= 4.33 <= 2^3)
If scale is 0.33, then the mapping is 2 because (2^(1/2) >= 0.33 >= 2^(1/4)
The base for the logarithmic raster scaling when zoomed.
The currently used scale factor.
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