How to set labels based on max and min value of the plot?

[klemenzagar91]

Im using Charts - 3.0.2 to plot line graph. On the left side I want to have 3 labels. Min, max and one in the middle of the graph.

I set the granulation based on the min and max value:
graphView.leftAxis.granularity = (data.yMax - data.yMin)/2.0
So the spacing is now correct, but the problem still left with the grid offset. Because it starts drawing at 0.0 but I want it to start a the minimum value of the graph.

Is it possible? Do you know any workaround?

[liuxuan30]

Sounds like you need ChartLimitLine and just make the limit line clear

[klemenzagar91]

ok, but in that case, the label to the line cannot be placed on the left side of the axis, where other labels are. without this, I cannot limit lines.

Is there an option to use limit lines and show the labels in the position where other axis values are? I couldn't find it.

[thierryH91200]

try that
for me it's ok

leftAxis.axisMinimum = min
leftAxis.axisMaximum = max
leftAxis.granularity = (max - min)/2
leftAxis.labelCount = 3
leftAxis.forceLabelsEnabled = true

[klemenzagar91]

Ok, but in this case some parts of chart are cut off.

For this reason I have a 1% margin around the graph values:

let space = (data.yMax - data.yMin)*0.05
graphView.leftAxis.axisMaximum = data.yMax + space
graphView.leftAxis.axisMinimum = data.yMin - space