Charts Not Showing Edge Data (left, right, both)

Adrian Zara

Hi,

I encountered something I find difficult to resolve in vaadin charts. I am using Bar charts where XAxis is enabled with Zoom gesture. However, as I zoomed in, there are times when the left data or right data or sometimes both, doesn't show their data. Please see the attached screenshot for your better understanding of my situation.

Thank you in advance!

Best regards,
Adrian

screenshot1.png (11.5 kB)

screenshot2.png (10.3 kB)

Guillermo Alvarez

Hi Adrian,

I can understand your problem but haven't been able to reproduce it.

Could you provide a simple code example that reproduces it? A method that returns a Chart that reproduces the issue when being zoomed would be enough.

Regards,

Guille

Adrian Zara

Hi Guillermo,

I noticed that this problem happens only when you have a huge data. Please see the screenshots as well as the java class example of chart.

Thank you in advance!

Best regards,
Adrian

ChartDemoUI.java (9.3 kB)

zoomed-in-part1.PNG (32.3 kB)

zoomed-in-part2.PNG (24.9 kB)

zoomed-out.PNG (46.8 kB)

Adrian Zara

Hi Guille,

Did you manage to simulate the problem using the attached source code?

Best regards,
Adrian

Guillermo Alvarez

Hi Adrian,

I haven't been able to reproduce it yet, I'll try to make some time today to test your files.

Regards,

Guille

Guillermo Alvarez

Hi Adrian,

Now I've been able to reproduce the issue. Unluckily it seems to be an open issue in the underlying chart library that Vaadin Charts uses.

As a workaround I've noticed that setting CropThreshold value to the size of the data series or the amount of categories seems to work. Look at the following code snippet:

PlotOptionsColumn options = new PlotOptionsColumn();
        options.setCropThreshold(120);
        conf.setPlotOptions(options);

The problem with this is that it might cause performance issues if value is too high.

Adrian Zara

Hi Guille,

Thank you for the follow up. I tried the setCropThreshold() it seemed to be working. It is available in Vaadin charts 3.0.0 and will try to update my project with the latest stable Vaadin release.

Thank you for the help.

Best regards,
Adrian

Guillermo Alvarez

Glad it worked!
Remember to check the Charts 2 to Charts 3 Migration Guide while doing the upgrade.

Adrian Zara

Guillermo Alvarez: Glad it worked!
Remember to check the Charts 2 to Charts 3 Migration Guide while doing the upgrade.

Noted, Guille.

Best regards,
Adrian

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Charts Not Showing Edge Data (left, right, both)

Vaadin lets you build secure, UX-first PWAs entirely in Java.
Free ebook & tutorial.