If your scales or scale labels are getting cut off in any way you must adjust the margins of your plotarea. You can do this explicitly like so:

plotarea: {
    marginLeft:'10%',
    marginRight:'10%',
    ...
}

Or You can let our algorithm do the work for you with:

plotarea: {
    marginLeft:'dynamic',
    marginRight:'dynamic'
    ...
}

If you are reading this question, your graph scales should be getting cut off by the edge of the graph or possibly overlapping other scales.

Example: https://demos.zingchart.com/view/I0GJTQ4J

Here's what your graph looks like after your margins have been set to dynamic

Example: https://demos.zingchart.com/view/KR1K6IKJ

Documentation

Plotarea JSON Docs

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