Get current axis interval between labels

[acegreen]

In my case I'm setting both granularity and labelcount, with the intention of having an even grid, 20x20 grids (labels) and a certain minimum granularity. This seems to work but I can display the current interval.

Doing leftAxis.granularity would display the minimum I set and not the current axis interval. Is there any way to get that or do I have to do some computation like getting two values on that axis and subtracting them?

    leftAxis.granularityEnabled = true
    leftAxis.granularity = granularityY
    leftAxis.forceLabelsEnabled = true
    leftAxis.labelCount = labelCount

[liuxuan30]

    open func setLabelCount(_ count: Int, force: Bool)
    {
        self.labelCount = count
        forceLabelsEnabled = force
    }

use this to set labelCount.

    open var labelCount: Int
    {
        get
        {
            return _labelCount
        }
        set
        {
            _labelCount = newValue
            
            if _labelCount > 25
            {
                _labelCount = 25
            }
            if _labelCount < 2
            {
                _labelCount = 2
            }
            
            forceLabelsEnabled = false
        }
    }

The setter is different.

[acegreen]

@liuxuan30 thats not the point though. I wanted to find a way to get the current interval (granularity) of my chart. As mentioned, the granularity I set is in my case not respected and thats fine since I want to force the labels but I would like to add the real granularity to my charts legend

[liuxuan30]

sorry I missed. No idea what's the convenient way to get interval. But one trick is to get two neighbor x values and use the ChartTransformer to calculate the interval in screen pixels.

[acegreen]

Thanks for the reply. So I got two neighbouring values. What property of ChartTransformer could I use? On a side note, shouldn't the _granularity property be updated to reflect the "real" granularity as opposed to granularity which we define as the minimum?

[liuxuan30]

I don't fully understand about granularity yet, but I do know granularity is used to be designed to filter repeated axis labels. so I am just thinking about getting intervals.
ChartTransformer has something like pointValuesToPixel and pixelsToValues to do convert.