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2
Votes

Discreate intervals support in SfCartesianChart

Hello Syncfusion Team,

I am currently using the SfCartesianChart in a Flutter application to display dynamic data ranges and require more flexibility with the Y-axis intervals. Currently, the Y-axis intervals are fixed and do not fully meet the needs of my data visualization.

Current Implementation:

The Y-axis on the chart currently supports fixed intervals as shown below:

NumericAxis(
  maximum: 27,
  interval: 27,
  majorGridLines: const MajorGridLines(width: 0.5, dashArray: [3, 3]),
  ...)

Requested Feature:
I would like to request the ability to define custom, non-constant intervals for the Y-axis. The desired feature should allow setting an array or a list of specific values that the Y-axis will adhere to, rather than a constant interval. This would enable the Y-axis to dynamically adjust according to the data it represents, which is particularly useful for datasets that do not scale linearly.
example usage:

NumericAxis(
  customIntervals: [0, 4, 9, 14, 19, 27],
  majorGridLines: const MajorGridLines(width: 0.5, dashArray: [3, 3]),
  ...)

Thank you for considering this enhancement. I believe it would greatly benefit many users who require more detailed and specific representations of data on their charts.