-Axis-related properties:
-includeZero
-valueRange
-labelsKMB
-labelsKMG2
-pixelsPerYLabel
-yAxisLabelWidth
-axisLabelFontSize
-axisTickSize
-
-How is the y-axis determined?
-
-Dygraph.numericTicks: min, max -> set of ticks for axis
-tick = { label: label, v: value }
-
-addYTicks_: min, max -> void
-sets the yAxis and yTicks properties of layout_
-
-drawGraph_:
-if set, uses this.valueRange_ ([low, high] array)
- -> adds ticks via addYTicks_
- -> sets displayedYRange_
-
-otherwise, calculates a good axis based on minY and maxY.
-
-this.displayedYRange_ is returned by the yAxisRange function.
-this is, in turn, used by the toDataCoords and toDomCoords methods.
-
-Path of least resistance:
-- in drawGraph_, calculate [minY, maxY] per-series
-- write a function to compute y-axes for all series, ensure only two axes.
-- make yAxis, yTicks into arrays in layout_
-- add a series -> axis mapping to layout_, dygraph
-- add code to Renderer to add second axis.
-- add optional 'series' parameter to toDomCoords/toDataCoords
-
-This won't be compatible with stacked charts.