How to add a text to the chart

[asmirn1]

Hi,

I'd like to add some text to a chart. Currently, I was able do it using XValueIndicator. Here is my code:

XValueIndicator indicator = new XValueIndicator(axis, mz, text);
indicator.setLabelPosition(relativeHeight);
indicator.setLabelVerticalAnchor(relativeHeight < 0.5 ? VPos.BOTTOM : VPos.TOP);
indicator.setEditable(false);
chart.getPlugins().add(indicator);

I've got the following result:

However, I'd like to do several changes:

• Remove the vertical dashed lines, and
• Stop users from moving the text (currently, users can drag the text anywhere along the x-axis)

I want the result to look something like this:

Please could you explain to remove the vertical lines and make the text static.

Also, is there any other way to add a text on a chart? Can I implement this using dataSet.addDataLabel()? I couldn't understand how.

Thank you

[wirew0rm]

setEditable(false) seems to only affect dragging on the line and not on the label, this is a bug, which we should fix.
For not drawing the line, you could use css, check the AbstractSingleValueIndicatorSample for an example of using css to style the indicator.

On the other hand, if you only want to have text, you could also implement your own plugin (probably based on one of the ValueIndicator variants). This should be pretty simple and would give you a lot more influence on how and where everything is rendered.

Looking at your screenshot, you seem to want to add labels to data points, for that usecase there is also the LabeledMarkerRenderer, which allows you to add your strings into your dataset. You would also have to suppress the drawing of the lines and possibly customize the renderer to put the labels at the right positions. Compared to the Plugin approach, this uses the grapics context instead of the scene graph and is non interactive by default.

[asmirn1]

It works now. Thank you!

[RalphSteinhagen]

@asmirn1 and @wirew0rm just merged the fix.

[RalphSteinhagen]

@asmirn1 did this answer/solve your issue?

[asmirn1]

@RalphSteinhagen Yes, it did.

I'm not sure how to close a discussion, so feel free to close it if it's possible.

[RalphSteinhagen]

@asmirn1 you could select @wirew0rm reply as an 'answer' that'll help.

Thanks again for your interest in chart-fx. Hope this helps in your purposes...