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Senior
December 7, 2025
Question

Scaling the chart y-axis for small values

  • December 7, 2025
  • 1 reply
  • 439 views

Hi;

I am trying to dial in a PID controller, and my values are small (0-1 range). The Chart widget seems to want to always set its Y axis bounds to [-10, 10], which makes it hard for me to see what's going on in realtime. I have to make an adjustment, then pause the acquisition to scroll way in to see what happened. 

Is there a way for me to manually specify the Y axis scale and have it stay persistent?

    1 reply

    Richard.Chvr
    Technical Moderator
    December 10, 2025

    Hello, min/max Y-axis could not be changed for line chart, it is however possible for bar chart.

    To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    sb_stAuthor
    Senior
    December 10, 2025

    Thank you!

    That's kind of a bummer - seems like sort of an arbitrary constraint, and using a bar graph to try to dial PID coefficients and see how the system reacts isn't really very helpful. 

    Would it be possible to request this as a feature?