chartscale property (fixed) via c# code

[sidlercom80]

Hello, is it possible to call the chartscale property (fixed) via c# code?



currently I reset the fixed scalling with the following code:

_chartScale.Properties.YAxisRangeType = YAxisRangeType.Automatic;

But I would just like to use the existing property on the chart and would have to address the property for that.

[NinjaTrader_Jim]

Hello sidlercom80,

Thanks for your post.

I am not not exactly sure what you are trying to accomplish differently. We have the NinjaScript object's AutoScale property, and we have the Fixed/Automatic scaling property for the ChartScale. Changing the ChartScale Fixed/Automatic scaling programmatically would be how you demonstrate in your snippet.

Setting a fixed scale programmatically would look like:

chartScale.Properties.FixedScaleMin = 0;
chartScale.Properties.FixedScaleMax = 100;
chartScale.Properties.YAxisRangeType = YAxisRangeType.Fixed;

Could you elaborate on what you want to do differently if this does not answer your question?

[sidlercom80]

Hi _Jim, thank you for your reply.
In my script, the YAxisRangeType = YAxisRangeType.Fixed is set when I move the chart with the mouse button pressed. Then I currently have to switch back to YAxisRangeType = YAxisRangeType.Automatic via key because the button is not displayed in the chart. I should be able to activate the button when I move the chart.

I made a short video: http://www.youtube.com/watch?v=rxsloJuCugM

[NinjaTrader_Jim]

Hello sidlercom80,

Thanks for clarifying.

This looks like it would be a limitation of how the Fixed/Automatic scaling button gets added to the chart, and since the ChartScale properties are intended to be modified by the user. While we can modify them programmatically, we do get this issue with the Fixed/Automatic button not appearing when doing so. (ChartScale Properties note that these are UI properties intended to be set by the user.)

Since the script is overriding the scaling by writing its own fixed scale, you could consider adding your own button to disable the forced Fixed scaling and revert back to Automatic. This may not be ideal, but may be worth considering.

[sidlercom80]

Hi _Jim, I almost thought so ;-) the button I have no problem. How do I get the button on the same place in the chartscale and not in the menu?

it doesn't work that way;

ChartPanel.Scales.Add(btnFixScale);

[NinjaTrader_Jim]

Hello sidlercom80,

I would have gone with adding a small button to UserControlCollection. that would reside in the very upper right corner, and still outside of the "Scroll to last bar" arrow.

Rendering is clipped to be within the ChartPanel and outside of the price scale, and UserControlCollection binds controls to be within the ChartPanel with the same rules. I don't have any suggestions to share to add anything to the price scale space on the chart.

[sidlercom80]

Hi _Jim, is there also a property for querying the status from Fixed/Automatic scaling button, as with ChartControl.IsScrollArrowVisible?

[NinjaTrader_Jim]

Hello sidlercom80,

There wasn't anything I saw for that purpose. I also had a look with the Windows Inspect tool to see if there was an Automation ID that could be used to find the button and check its visibility, and there wouldn't be anything to use there.

Adding your own "Return to AutoScale" button can be shown if (chartScale.Properties.YAxisRangeType == YAxisRangeType.Fixed) There may be cases where NinjaTrader's "Return to AutoScale" button appears when a user changes the property through the UI, and your script will also show its button. I don't think there would be a way around this scenario.

[sidlercom80]

Thank you _Jim for your work! That would have been too easy ;-) I will keep trying.

[sidlercom80]

Hi _Jim, I made my own "F" button and have one last question ;-) can the original symbol be switched off or overwritten so that it is no longer visible on the chart?

[NinjaTrader_Jim]

Hello sidlercom80,

What do you mean by "the original symbol?" If you are referring to NinjaTrader's "F" button, I do not have any suggestion for finding/hiding this button.

[sidlercom80]

Hi _Jim, yes, that's exactly what I meant. Too bad that there is no solution for this, but thank you for your help!