Adding black line at value 0

[fxinq1009]

I have a Bar chart with Y values ranging from positive to negative using style MATH for Axis display.  Client wants to add an additional horizontal black line at value 0 where all the bars base on.  Does anybody know how to do that?  Thanks.

[CarlosAC]

Hi fxinq1009

You can use a CustomGridLine, please check the following code:

CustomGridLine cgl = new CustomGridLine();

cgl.Value = 0;

cgl.Color = Color.Black;

chart1.AxisY.CustomGridLines.Add(cgl);

-- Pipon

[fxinq1009]

Hi Pipon,

Thank you very much for the information. Do you know which version of Chart FX has the CustomGridLine class? I'm using version 6, it seems the class does not exist.

-- fxinq1009 

 

[CarlosAC]

Hi fxinq1009

I apologize since I copied code valid for Chart FX 7 and not for Chart FX 6.x for Java.  Unfortunately, Chart FX 6.x for Java does not have the Custom Grid Lines option.  From checking the API, I found a possible workaround.  Please check following code:

AxisSection section1 = chart1.getAxisX().getSections().getItem(0);section1.setFrom(0);section1.setTo(0);section1.setFontStyle(java.awt.Font.BOLD|java.awt.Font.ITALIC);section1.setGridlines(true);section1.setTextColor(java.awt.Color.red);section1.setBackColor(new java.awt.Color(255,0,0,32));section1.getGrid().setColor(section1.getTextColor());section1.getGrid().setWidth(2);

Please note that I am setting FROM and TO values with

[fxinq1009]

Hi Pipon,

Thanks for the quick response. It looks like what you provided will work.  I'll give a try.

-- Leon