How do I set the data for the x-axis?

[978740431]

Now the display is 0~N, I want to display the date, how do I need to set

[lukaknezic]

Hey,

With GridDecoration or VerticalAxisDecoration you have valueFromIndex. This is a function that will return you index and you can return any string you want as label text.

Hope that helps 😄

[978740431]

Thank you very much, it is ready to use.
I hope there is a case in the demo, because my English and flutter technology is very poor, so after reading your reply I still took some time to solve it, if the case has examples, it will be very good to help sdk users

[lukaknezic]

Great 🎉
Okay, thanks for input. I'll add that to readme and maybe some examples 😃

[roly151]

For anyone looking to do this, here is an example that adds three letter day names to the horizontal axis (starting from today - var now = new DateTime.now();

GridDecoration(
                showHorizontalValues: false,
                showVerticalValues: true,
                verticalAxisValueFromIndex: (int value) {
                      return DateFormat.E().format(now.add(new Duration(days: value))).toString();
                  },
                verticalAxisStep: 1,
                horizontalAxisStep: 3,
                textStyle: TextStyle(color: Colors.grey),
                gridColor: Theme.of(context).dividerColor,
              ),