Grouping of chart category labels

Radzen.Blazor Components
1

billede
billede2241×165 15.8 KB

Is there any way to group the different category label ? For exampel if I have a multy year data set, could I somehow make it so that the Year number is displayed underneath all the months only 1 time, so to not have to repeat it and clutter up all the month names ?

2

Hi @iustin94,

There is no way to group the category labels. You can however format the category display the way you need via the Formatter callback.

<RadzenChart>
    
    <RadzenCategoryAxis Formatter="@FormatCategory" />
</RadzenChart>
@code {
   string FormatCategory(object value)
   {
      // return the desired string representation of "value"
   }
}
3

HI thank's for the hint. I tried using that but the value object returns null from the chart even tough there is a string give,

Here you can see my chart definition:

billede
billede1781×492 91.7 KB

And when the formatter gets called the value provided is null

billede
billede848×284 35.3 KB

4

Try adding a null check:

string CategoryLabelFormatter(object value)
{
   if (value != null)
   {
      //
   }

   return null;
}
1 Like
5

This works, but it seems like a bug. I don't call this funciton anywhere else except for this chart, and in this chart all the data points have a coresponding category label, so I should not get a null value. This is more of a workaround