import CoreUtils from './CoreUtils'
import Utils from '../utils/Utils'

export default class Scales {
  constructor(ctx) {
    this.ctx = ctx
    this.w = ctx.w
    this.coreUtils = new CoreUtils(this.ctx)
  }

  // http://stackoverflow.com/questions/326679/choosing-an-attractive-linear-scale-for-a-graphs-y-axis
  // This routine creates the Y axis values for a graph.
  niceScale(yMin, yMax, index = 0) {
    // Calculate Min amd Max graphical labels and graph
    // increments.
    //
    // Output will be an array of the Y axis values that
    // encompass the Y values.
    const jsPrecision = 1e-11 // JS precision errors
    const w = this.w
    const gl = w.globals
    let axisCnf
    let maxTicks
    let gotMin
    let gotMax
    if (gl.isBarHorizontal) {
      axisCnf = w.config.xaxis
      // The most ticks we can fit into the svg chart dimensions
      maxTicks = Math.max((gl.svgWidth - 100) / 25, 2) // Guestimate
    } else {
      axisCnf = w.config.yaxis[index]
      maxTicks = Math.max((gl.svgHeight - 100) / 15, 2)
    }
    if (!Utils.isNumber(maxTicks)) {
      maxTicks = 10
    }
    gotMin = axisCnf.min !== undefined && axisCnf.min !== null
    gotMax = axisCnf.max !== undefined && axisCnf.min !== null
    let gotStepSize =
      axisCnf.stepSize !== undefined && axisCnf.stepSize !== null
    let gotTickAmount =
      axisCnf.tickAmount !== undefined && axisCnf.tickAmount !== null
    let ticks = gotTickAmount
      ? axisCnf.tickAmount
      : gl.niceScaleDefaultTicks[
          Math.min(
            Math.round(maxTicks / 2),
            gl.niceScaleDefaultTicks.length - 1
          )
        ]

    // In case we have a multi axis chart:
    // Ensure subsequent series start with the same tickAmount as series[0],
    // because the tick lines are drawn based on series[0]. This does not
    // override user defined options for any yaxis.
    if (gl.isMultipleYAxis && !gotTickAmount && gl.multiAxisTickAmount > 0) {
      ticks = gl.multiAxisTickAmount
      gotTickAmount = true
    }

    if (ticks === 'dataPoints') {
      ticks = gl.dataPoints - 1
    } else {
      // Ensure ticks is an integer
      ticks = Math.abs(Math.round(ticks))
    }

    if (
      (yMin === Number.MIN_VALUE && yMax === 0) ||
      (!Utils.isNumber(yMin) && !Utils.isNumber(yMax)) ||
      (yMin === Number.MIN_VALUE && yMax === -Number.MAX_VALUE)
    ) {
      // when all values are 0
      yMin = Utils.isNumber(axisCnf.min) ? axisCnf.min : 0
      yMax = Utils.isNumber(axisCnf.max) ? axisCnf.max : yMin + ticks
      gl.allSeriesCollapsed = false
    }

    if (yMin > yMax) {
      // if somehow due to some wrong config, user sent max less than min,
      // adjust the min/max again
      console.warn(
        'axis.min cannot be greater than axis.max: swapping min and max'
      )
      let temp = yMax
      yMax = yMin
      yMin = temp
    } else if (yMin === yMax) {
      // If yMin and yMax are identical, then
      // adjust the yMin and yMax values to actually
      // make a graph. Also avoids division by zero errors.
      yMin = yMin === 0 ? 0 : yMin - 1 // choose an integer in case yValueDecimals=0
      yMax = yMax === 0 ? 2 : yMax + 1 // choose an integer in case yValueDecimals=0
    }

    let result = []

    if (ticks < 1) {
      ticks = 1
    }
    let tiks = ticks

    // Determine Range
    let range = Math.abs(yMax - yMin)

    // Snap min or max to zero if close
    let proximityRatio = 0.15
    if (!gotMin && yMin > 0 && yMin / range < proximityRatio) {
      yMin = 0
      gotMin = true
    }
    if (!gotMax && yMax < 0 && -yMax / range < proximityRatio) {
      yMax = 0
      gotMax = true
    }
    range = Math.abs(yMax - yMin)

    // Calculate a pretty step value based on ticks

    // Initial stepSize
    let stepSize = range / tiks
    let niceStep = stepSize
    let mag = Math.floor(Math.log10(niceStep))
    let magPow = Math.pow(10, mag)
    // ceil() is used below in conjunction with the values populating
    // niceScaleAllowedMagMsd[][] to ensure that (niceStep * tiks)
    // produces a range that doesn't clip data points after stretching
    // the raw range out a little to match the prospective new range.
    let magMsd = Math.ceil(niceStep / magPow)
    // See globals.js for info on what niceScaleAllowedMagMsd does
    magMsd = gl.niceScaleAllowedMagMsd[gl.yValueDecimal === 0 ? 0 : 1][magMsd]
    niceStep = magMsd * magPow

    // Initial stepSize
    stepSize = niceStep

    // Get step value
    if (gl.isBarHorizontal && axisCnf.stepSize && axisCnf.type !== 'datetime') {
      stepSize = axisCnf.stepSize
      gotStepSize = true
    } else if (gotStepSize) {
      stepSize = axisCnf.stepSize
    }
    if (gotStepSize) {
      if (axisCnf.forceNiceScale) {
        // Check that given stepSize is sane with respect to the range.
        //
        // The user can, by setting forceNiceScale = true,
        // define a stepSize that will be scaled to a useful value before
        // it's checked for consistency.
        //
        // If, for example, the range = 4 and the user defined stepSize = 8
        // (or 8000 or 0.0008, etc), then stepSize is inapplicable as
        // it is. Reducing it to 0.8 will fit with 5 ticks.
        //
        let stepMag = Math.floor(Math.log10(stepSize))
        stepSize *= Math.pow(10, mag - stepMag)
      }
    }

    // Start applying some rules
    if (gotMin && gotMax) {
      let crudeStep = range / tiks
      // min and max (range) cannot be changed
      if (gotTickAmount) {
        if (gotStepSize) {
          if (Utils.mod(range, stepSize) != 0) {
            // stepSize conflicts with range
            let gcdStep = Utils.getGCD(stepSize, crudeStep)
            // gcdStep is a multiple of range because crudeStep is a multiple.
            // gcdStep is also a multiple of stepSize, so it partially honoured
            // All three could be equal, which would be very nice
            // if the computed stepSize generates too many ticks they will be
            // reduced later, unless the number is prime, in which case,
            // the chart will display all of them or just one (plus the X axis)
            // depending on svg dimensions. Setting forceNiceScale: true will force
            // the display of at least the default number of ticks.
            if (crudeStep / gcdStep < 10) {
              stepSize = gcdStep
            } else {
              // stepSize conflicts and no reasonable adjustment, but must
              // honour tickAmount
              stepSize = crudeStep
            }
          } else {
            // stepSize fits
            if (Utils.mod(stepSize, crudeStep) == 0) {
              // crudeStep is a multiple of stepSize, or vice versa
              // but we know that crudeStep will generate tickAmount ticks
              stepSize = crudeStep
            } else {
              // stepSize conflicts with tickAmount
              // if the user is setting up a multi-axis chart and wants
              // synced axis ticks then they should not define stepSize
              // or ensure there is no conflict between any of their options
              // on any axis.
              crudeStep = stepSize
              // De-prioritizing ticks from now on
              gotTickAmount = false
            }
          }
        } else {
          // no user stepSize, honour tickAmount
          stepSize = crudeStep
        }
      } else {
        // default ticks in use, tiks can change
        if (gotStepSize) {
          if (Utils.mod(range, stepSize) == 0) {
            // user stepSize fits
            crudeStep = stepSize
          } else {
            stepSize = crudeStep
          }
        } else {
          // no user stepSize
          if (Utils.mod(range, stepSize) == 0) {
            // generated nice stepSize fits
            crudeStep = stepSize
          } else {
            tiks = Math.ceil(range / stepSize)
            crudeStep = range / tiks
            let gcdStep = Utils.getGCD(range, stepSize)
            if (range / gcdStep < maxTicks) {
              crudeStep = gcdStep
            }
            stepSize = crudeStep
          }
        }
      }
      tiks = Math.round(range / stepSize)
    } else {
      // Snap range to ticks
      if (!gotMin && !gotMax) {
        if (gl.isMultipleYAxis && gotTickAmount) {
          // Ensure graph doesn't clip.
          let tMin = stepSize * Math.floor(yMin / stepSize)
          let tMax = tMin + stepSize * tiks
          if (tMax < yMax) {
            stepSize *= 2
          }
          yMin = tMin
          tMax = yMax
          yMax = yMin + stepSize * tiks
          // Snap min or max to zero if possible
          range = Math.abs(yMax - yMin)
          if (yMin > 0 && yMin < Math.abs(tMax - yMax)) {
            yMin = 0
            yMax = stepSize * tiks
          }
          if (yMax < 0 && -yMax < Math.abs(tMin - yMin)) {
            yMax = 0
            yMin = -stepSize * tiks
          }
        } else {
          yMin = stepSize * Math.floor(yMin / stepSize)
          yMax = stepSize * Math.ceil(yMax / stepSize)
        }
      } else if (gotMax) {
        if (gotTickAmount) {
          yMin = yMax - stepSize * tiks
        } else {
          let yMinPrev = yMin
          yMin = stepSize * Math.floor(yMin / stepSize)
          if (
            Math.abs(yMax - yMin) / Utils.getGCD(range, stepSize) >
            maxTicks
          ) {
            // Use default ticks to compute yMin then shrinkwrap
            yMin = yMax - stepSize * ticks
            yMin += stepSize * Math.floor((yMinPrev - yMin) / stepSize)
          }
        }
      } else if (gotMin) {
        if (gotTickAmount) {
          yMax = yMin + stepSize * tiks
        } else {
          let yMaxPrev = yMax
          yMax = stepSize * Math.ceil(yMax / stepSize)
          if (
            Math.abs(yMax - yMin) / Utils.getGCD(range, stepSize) >
            maxTicks
          ) {
            // Use default ticks to compute yMin then shrinkwrap
            yMax = yMin + stepSize * ticks
            yMax += stepSize * Math.ceil((yMaxPrev - yMax) / stepSize)
          }
        }
      }
      range = Math.abs(yMax - yMin)
      // Final check and possible adjustment of stepSize to prevent
      // overriding the user's min or max choice.
      stepSize = Utils.getGCD(range, stepSize)
      tiks = Math.round(range / stepSize)
    }

    // Shrinkwrap ticks to the range
    if (!gotTickAmount && !(gotMin || gotMax)) {
      tiks = Math.ceil((range - jsPrecision) / (stepSize + jsPrecision))
      // No user tickAmount, or min or max, we are free to adjust to avoid a
      // prime number. This helps when reducing ticks for small svg dimensions.
      if (tiks > 16 && Utils.getPrimeFactors(tiks).length < 2) {
        tiks++
      }
    }

    // Prune tiks down to range if series is all integers. Since tiks > range,
    // range is very low (< 10 or so). Skip this step if gotTickAmount is true
    // because either the user set tickAmount or the chart is multiscale and
    // this axis is not determining the number of grid lines.
    if (
      !gotTickAmount &&
      axisCnf.forceNiceScale &&
      gl.yValueDecimal === 0 &&
      tiks > range
    ) {
      tiks = range
      stepSize = Math.round(range / tiks)
    }

    if (
      tiks > maxTicks &&
      (!(gotTickAmount || gotStepSize) || axisCnf.forceNiceScale)
    ) {
      // Reduce the number of ticks nicely if chart svg dimensions shrink too far.
      // The reduced tick set should always be a subset of the full set.
      //
      // This following products of prime factors method works as follows:
      // We compute the prime factors of the full tick count (tiks), then all the
      // possible products of those factors in order from smallest to biggest,
      // until we find a product P such that: tiks/P < maxTicks.
      //
      // Example:
      // Computing products of the prime factors of 30.
      //
      //   tiks | pf  |  1     2     3      4      5      6  <-- compute order
      //   --------------------------------------------------
      //     30 |  5  |              5             5      5  <-- Multiply all
      //        |  3  |        3            3      3      3  <-- primes in each
      //        |  2  |  2                  2             2  <-- column = P
      //   --------------------------------------------------
      //                15    10     6      5      2      1  <-- tiks/P
      //
      //   tiks = 30 has prime factors [2, 3, 5]
      //   The loop below computes the products [2,3,5,6,15,30].
      //   The last product of P = 2*3*5 is skipped since 30/P = 1.
      //   This yields tiks/P = [15,10,6,5,2,1], checked in order until
      //   tiks/P < maxTicks.
      //
      //   Pros:
      //      1) The ticks in the reduced set are always members of the
      //         full set of ticks.
      //   Cons:
      //      1) None: if tiks is prime, we get all or one, nothing between, so
      //      the worst case is to display all, which is the status quo. Really
      //      only a problem visually for larger tick numbers, say, > 7.
      //
      let pf = Utils.getPrimeFactors(tiks)
      let last = pf.length - 1
      let tt = tiks
      reduceLoop: for (var xFactors = 0; xFactors < last; xFactors++) {
        for (var lowest = 0; lowest <= last - xFactors; lowest++) {
          let stop = Math.min(lowest + xFactors, last)
          let t = tt
          let div = 1
          for (var next = lowest; next <= stop; next++) {
            div *= pf[next]
          }
          t /= div
          if (t < maxTicks) {
            tt = t
            break reduceLoop
          }
        }
      }
      if (tt === tiks) {
        // Could not reduce ticks at all, go all in and display just the
        // X axis and one tick.
        stepSize = range
      } else {
        stepSize = range / tt
      }
      tiks = Math.round(range / stepSize)
    }

    // Record final tiks for use by other series that call niceScale().
    // Note: some don't, like logarithmicScale(), etc.
    if (
      gl.isMultipleYAxis &&
      gl.multiAxisTickAmount == 0 &&
      gl.ignoreYAxisIndexes.indexOf(index) < 0
    ) {
      gl.multiAxisTickAmount = tiks
    }

    // build Y label array.

    let val = yMin - stepSize
    // Ensure we don't under/over shoot due to JS precision errors.
    // This also fixes (amongst others):
    // https://github.com/apexcharts/apexcharts.js/issues/430
    let err = stepSize * jsPrecision
    do {
      val += stepSize
      result.push(Utils.stripNumber(val, 7))
    } while (yMax - val > err)

    return {
      result,
      niceMin: result[0],
      niceMax: result[result.length - 1],
    }
  }

  linearScale(yMin, yMax, ticks = 10, index = 0, step = undefined) {
    let range = Math.abs(yMax - yMin)
    let result = []

    if (yMin === yMax) {
      result = [yMin]

      return {
        result,
        niceMin: result[0],
        niceMax: result[result.length - 1],
      }
    }

    ticks = this._adjustTicksForSmallRange(ticks, index, range)

    if (ticks === 'dataPoints') {
      ticks = this.w.globals.dataPoints - 1
    }

    if (!step) {
      step = range / ticks
    }

    step = Math.round((step + Number.EPSILON) * 10) / 10

    if (ticks === Number.MAX_VALUE) {
      ticks = 5
      step = 1
    }

    let v = yMin

    while (ticks >= 0) {
      result.push(v)
      v = Utils.preciseAddition(v, step)
      ticks -= 1
    }

    return {
      result,
      niceMin: result[0],
      niceMax: result[result.length - 1],
    }
  }

  logarithmicScaleNice(yMin, yMax, base) {
    // Basic validation to avoid for loop starting at -inf.
    if (yMax <= 0) yMax = Math.max(yMin, base)
    if (yMin <= 0) yMin = Math.min(yMax, base)

    const logs = []

    // Get powers of base for our max and min
    const logMax = Math.ceil(Math.log(yMax) / Math.log(base) + 1)
    const logMin = Math.floor(Math.log(yMin) / Math.log(base))

    for (let i = logMin; i < logMax; i++) {
      logs.push(Math.pow(base, i))
    }

    return {
      result: logs,
      niceMin: logs[0],
      niceMax: logs[logs.length - 1],
    }
  }

  logarithmicScale(yMin, yMax, base) {
    // Basic validation to avoid for loop starting at -inf.
    if (yMax <= 0) yMax = Math.max(yMin, base)
    if (yMin <= 0) yMin = Math.min(yMax, base)

    const logs = []

    // Get the logarithmic range.
    const logMax = Math.log(yMax) / Math.log(base)
    const logMin = Math.log(yMin) / Math.log(base)

    // Get the exact logarithmic range.
    // (This is the exact number of multiples of the base there are between yMin and yMax).
    const logRange = logMax - logMin

    // Round the logarithmic range to get the number of ticks we will create.
    // If the chosen min/max values are multiples of each other WRT the base, this will be neat.
    // If the chosen min/max aren't, we will at least still provide USEFUL ticks.
    const ticks = Math.round(logRange)

    // Get the logarithmic spacing between ticks.
    const logTickSpacing = logRange / ticks

    // Create as many ticks as there is range in the logs.
    for (
      let i = 0, logTick = logMin;
      i < ticks;
      i++, logTick += logTickSpacing
    ) {
      logs.push(Math.pow(base, logTick))
    }

    // Add a final tick at the yMax.
    logs.push(Math.pow(base, logMax))

    return {
      result: logs,
      niceMin: yMin,
      niceMax: yMax,
    }
  }

  _adjustTicksForSmallRange(ticks, index, range) {
    let newTicks = ticks
    if (
      typeof index !== 'undefined' &&
      this.w.config.yaxis[index].labels.formatter &&
      this.w.config.yaxis[index].tickAmount === undefined
    ) {
      const formattedVal = Number(
        this.w.config.yaxis[index].labels.formatter(1)
      )
      if (Utils.isNumber(formattedVal) && this.w.globals.yValueDecimal === 0) {
        newTicks = Math.ceil(range)
      }
    }
    return newTicks < ticks ? newTicks : ticks
  }

  setYScaleForIndex(index, minY, maxY) {
    const gl = this.w.globals
    const cnf = this.w.config

    let y = gl.isBarHorizontal ? cnf.xaxis : cnf.yaxis[index]

    if (typeof gl.yAxisScale[index] === 'undefined') {
      gl.yAxisScale[index] = []
    }

    let range = Math.abs(maxY - minY)

    if (y.logarithmic && range <= 5) {
      gl.invalidLogScale = true
    }

    if (y.logarithmic && range > 5) {
      gl.allSeriesCollapsed = false
      gl.yAxisScale[index] = y.forceNiceScale
        ? this.logarithmicScaleNice(minY, maxY, y.logBase)
        : this.logarithmicScale(minY, maxY, y.logBase)
    } else {
      if (
        maxY === -Number.MAX_VALUE ||
        !Utils.isNumber(maxY) ||
        minY === Number.MAX_VALUE ||
        !Utils.isNumber(minY)
      ) {
        // no data in the chart.
        // Either all series collapsed or user passed a blank array.
        // Show the user's yaxis with their scale options but with a range.
        gl.yAxisScale[index] = this.niceScale(Number.MIN_VALUE, 0, index)
      } else {
        // there is some data. Turn off the allSeriesCollapsed flag
        gl.allSeriesCollapsed = false
        gl.yAxisScale[index] = this.niceScale(minY, maxY, index)
      }
    }
  }

  setXScale(minX, maxX) {
    const w = this.w
    const gl = w.globals
    let diff = Math.abs(maxX - minX)
    if (maxX === -Number.MAX_VALUE || !Utils.isNumber(maxX)) {
      // no data in the chart. Either all series collapsed or user passed a blank array
      gl.xAxisScale = this.linearScale(0, 10, 10)
    } else {
      let ticks = gl.xTickAmount

      if (diff < 10 && diff > 1) {
        ticks = diff
      }
      gl.xAxisScale = this.linearScale(
        minX,
        maxX,
        ticks,
        0,
        w.config.xaxis.stepSize
      )
    }
    return gl.xAxisScale
  }

  scaleMultipleYAxes() {
    const cnf = this.w.config
    const gl = this.w.globals

    this.coreUtils.setSeriesYAxisMappings()

    let axisSeriesMap = gl.seriesYAxisMap
    let minYArr = gl.minYArr
    let maxYArr = gl.maxYArr

    // Compute min..max for each yaxis
    gl.allSeriesCollapsed = true
    gl.barGroups = []
    axisSeriesMap.forEach((axisSeries, ai) => {
      let groupNames = []
      axisSeries.forEach((as) => {
        let group = cnf.series[as].group
        if (groupNames.indexOf(group) < 0) {
          groupNames.push(group)
        }
      })
      if (axisSeries.length > 0) {
        let minY = Number.MAX_VALUE
        let maxY = -Number.MAX_VALUE
        let lowestY = minY
        let highestY = maxY
        let seriesType
        let seriesGroupName
        if (cnf.chart.stacked) {
          // Series' on this axis with the same group name will be stacked.
          // Sum series in each group separately
          let mapSeries = new Array(gl.dataPoints).fill(0)
          let sumSeries = []
          let posSeries = []
          let negSeries = []
          groupNames.forEach(() => {
            sumSeries.push(mapSeries.map(() => Number.MIN_VALUE))
            posSeries.push(mapSeries.map(() => Number.MIN_VALUE))
            negSeries.push(mapSeries.map(() => Number.MIN_VALUE))
          })
          for (let i = 0; i < axisSeries.length; i++) {
            // Assume chart type but the first series that has a type overrides.
            if (!seriesType && cnf.series[axisSeries[i]].type) {
              seriesType = cnf.series[axisSeries[i]].type
            }
            // Sum all series for this yaxis at each corresponding datapoint
            // For bar and column charts we need to keep positive and negative
            // values separate, for each group separately.
            let si = axisSeries[i]
            if (cnf.series[si].group) {
              seriesGroupName = cnf.series[si].group
            } else {
              seriesGroupName = 'axis-'.concat(ai)
            }
            let collapsed = !(
              gl.collapsedSeriesIndices.indexOf(si) < 0 &&
              gl.ancillaryCollapsedSeriesIndices.indexOf(si) < 0
            )
            if (!collapsed) {
              gl.allSeriesCollapsed = false
              groupNames.forEach((gn, gni) => {
                // Undefined group names will be grouped together as their own
                // group.
                if (cnf.series[si].group === gn) {
                  for (let j = 0; j < gl.series[si].length; j++) {
                    let val = gl.series[si][j]
                    if (val >= 0) {
                      posSeries[gni][j] += val
                    } else {
                      negSeries[gni][j] += val
                    }
                    sumSeries[gni][j] += val
                    // For non bar-like series' we need these point max/min values.
                    lowestY = Math.min(lowestY, val)
                    highestY = Math.max(highestY, val)
                  }
                }
              })
            }
            if (seriesType === 'bar' || seriesType === 'column') {
              gl.barGroups.push(seriesGroupName)
            }
          }
          if (!seriesType) {
            seriesType = cnf.chart.type
          }
          if (seriesType === 'bar' || seriesType === 'column') {
            groupNames.forEach((gn, gni) => {
              minY = Math.min(minY, Math.min.apply(null, negSeries[gni]))
              maxY = Math.max(maxY, Math.max.apply(null, posSeries[gni]))
            })
          } else {
            groupNames.forEach((gn, gni) => {
              lowestY = Math.min(lowestY, Math.min.apply(null, sumSeries[gni]))
              highestY = Math.max(
                highestY,
                Math.max.apply(null, sumSeries[gni])
              )
            })
            minY = lowestY
            maxY = highestY
          }
          if (minY === Number.MIN_VALUE && maxY === Number.MIN_VALUE) {
            // No series data
            maxY = -Number.MAX_VALUE
          }
        } else {
          for (let i = 0; i < axisSeries.length; i++) {
            let si = axisSeries[i]
            minY = Math.min(minY, minYArr[si])
            maxY = Math.max(maxY, maxYArr[si])
            let collapsed = !(
              gl.collapsedSeriesIndices.indexOf(si) < 0 &&
              gl.ancillaryCollapsedSeriesIndices.indexOf(si) < 0
            )
            if (!collapsed) {
              gl.allSeriesCollapsed = false
            }
          }
        }
        if (cnf.yaxis[ai].min !== undefined) {
          if (typeof cnf.yaxis[ai].min === 'function') {
            minY = cnf.yaxis[ai].min(minY)
          } else {
            minY = cnf.yaxis[ai].min
          }
        }
        if (cnf.yaxis[ai].max !== undefined) {
          if (typeof cnf.yaxis[ai].max === 'function') {
            maxY = cnf.yaxis[ai].max(maxY)
          } else {
            maxY = cnf.yaxis[ai].max
          }
        }
        gl.barGroups = gl.barGroups.filter((v, i, a) => a.indexOf(v) === i)
        // Set the scale for this yaxis
        this.setYScaleForIndex(ai, minY, maxY)
        // Set individual series min and max to nice values
        axisSeries.forEach((si) => {
          minYArr[si] = gl.yAxisScale[ai].niceMin
          maxYArr[si] = gl.yAxisScale[ai].niceMax
        })
      } else {
        // No series referenced by this yaxis
        this.setYScaleForIndex(ai, 0, -Number.MAX_VALUE)
      }
    })
  }
}
