the area series TrackballBehavior don't render correctly while having continuous empty points with drop mode

[happylh2012]

the area series TrackballBehavior don't render correctly while having continuous empty points with drop mode

[PreethikaSelvam]

Hi @happylh2012,

We can replicate the reported issue. Currently, we are validating the issue at the source level. We will fix the issue and it will be rolled out in the upcoming weekly patch release on February 13, 2024. We appreciate your patience until then.

Regards,

Preethika Selvam.

[PreethikaSelvam]

Hi @happylh2012,

We would like to let you know that the reported issue has been fixed and rolled out in our patch release. We kindly request that you upgrade the syncfusion_flutter_charts package to the latest version below.

Version: https://pub.dev/packages/syncfusion_flutter_charts/versions/24.2.5

Root cause: The point index for trackballInfo was not calculated correctly with empty data points for area type series since it’s a single segmented series.

If you have any further queries, please feel free to reach out to us.

Regards,
Preethika Selvam.

[happylh2012]

Hi @Preethika Selvam

Thank you for resolving the issue quickly. Here are some other optimization-related questions:
1：Can the content of the y-axis on the chart be placed above the chart ? This is because the width of the display on mobile phones is limited, and expanding the display area of the chart could be helpful.
2：Is it possible to expand custom content, such as displaying weather icons at fixed intervals above the chart?
Best Regards,
happylh1218

[happylh2012]

the area series TrackballBehavior don't render correctly while having continuous empty points with drop mode at the lastest version ,but work at version 24.2.6

[PreethikaSelvam]

Hi @happylh2012,

Query 1: Need to place the y-axis above the chart.

We would like to let you know, we cannot position both the x-axis and y-axis horizontally. To transpose the axis, you can use the transposed property to switch the horizontal and vertical axes. However, we cannot position both the x-axis and y-axis horizontally. If you want to move axis within the plot area and expand the series rendering area, we suggest moving the axis tick position and axis label position inside by using the tickPosition and labelPosition.

Query 2: Need to add custom content (weather icons) above the chart.

To achieve your requirement, we suggest you to use a annotation property in which allows you to customizes the position and alignment of annotation widget. We have shared a UG documentation for your reference.

UG Link: https://help.syncfusion.com/flutter/cartesian-charts/annotations

Query 3: The area series TrackballBehavior don't render correctly while having continuous empty points with drop mode at the latest version but work at version 24.2.6.

Thank you for informing us about the issue; we were able to replicate it from the version 25.1.35. This issue is scheduled to be fixed in our upcoming patch release following the Volume 2 Main Release which is expected to be rolled out in the third week of June. We will update you here once the release is rolled out and we appreciate your patience until then.

Regards,

Preethika Selvam.

[PreethikaSelvam]

​Hi @happylh2012,

The reported issue is fixed, and the fix published in the below version. Therefore, we kindly request that you upgrade the syncfusion_flutter_charts package to the latest version below to avoid this issue.

Version: https://pub.dev/packages/syncfusion_flutter_charts/versions/26.1.38

Root cause: Got wrong point index when having continuous empty points with drop mode.

Regards,

Preethika Selvam.