What’s Coming in 2018 Volume 1: Chart in Xamarin.Forms

Syncfusion is excited to announce that we have enhanced our most popular Xamarin chart control with a new chart type and many most requested features in the upcoming 2018 Volume 1 release. They are: gradient color support, legend items templating, customization of individual axis labels, new spline range area chart type, and performance improvements.

Gradient colors—It's time to make the chart more stylish with gradient colors. We have constructed models to define gradient colors, allowing you to customize the direction of gradient colors using start and end points and set the color based on the range. The following screenshot shows how the high and low temperatures of the year are differentiated with colors.

Advanced customization of axis labels—This feature allows us to customize chart axis labels based on the indexes and values. We have included appearance customization APIs for the existing LabelCreated EventArgs. The following screenshot has been captured from the test app, the date-time axis labels are customized based on date, the first label of the month is formatted with month, day, and year components of date, and consecutive labels on the month are just showing the day of the month.

Templating legend items—Now, we can set a data template for legend items, replacing the entire built-in legend item view with the data template. We can make the necessary bindings in a data template with the respective legend item’s value.

New chart type - We have added a new chart type called spline range area in this release, this is used to show the trend of high and low values of data using curved area. This chart type is similar to range area chart.

Performance—The performance of interactivity in charts with a large amount of data has been improved. Now, it is easy to move the trackball across the chart, activate the tooltip to show data point info, and zoom in to view data clearly when there’s 500K data points.

With the above features and improvements, we have included some other minor improvements and bug fixes, the information for which will be published in our release notes. Our 2018 Volume 1 release has been scheduled to rollout in mid-February. Please post your comments below if you have any questions or feedback. We are happy to offer any help we can.

For code snippets and images of these new enhancements, check out the full article here.