[Update]: We have just released v1.9.0 with Logarithmic Axis. Please checkout gallery page for Logarithmic Scale.
You can manage the viewport by setting viewportMinimum and/or viewportMaximum. Using which you can reduce the gap. And in logarithmic axis 0 always maps to 1 as log(1) = 0.
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This reply was modified 8 years, 5 months ago by
Sunil Urs.