ActiveReports 18 .NET Edition
Report Authors / Report Controls / Report Controls in Page/RDLX Report / Chart / Plots / Polar Chart / Create Simple Polar Chart
In This Topic
    Create Simple Polar Chart
    In This Topic

    This walkthrough creates a Simple Polar Chart. The chart shows the total sales for different product categories. The final chart appears like this:

    Polar Chart

    Create a Report and Bind Report to Data

    In the ActiveReports Designer, create a new RDLX report and follow the New Report wizard to bind the report to data. You can also perform data binding later using the Report Data Source dialog accessed from the Report Explorer.

    Connect to a Data Source

    1. In the Report Data Source dialog, select the General page and enter the name of the data source.
    2. Under Type, select 'Json Provider'.
    3. Go to the Content tab under Connection and set the type of JSON data to 'External file or URL'.
    4. In the Select or type the file name or URL field, enter the following URL:
      https://demodata.mescius.io/contoso/odata/v1/FactSales
      For more information, see the JSON Provider topic.
    5. Go to the Connection String tab and verify the generated connection string by clicking the Validate DataSource Validate Data Source icon.
    6. Click OK to save the changes and open the DataSet dialog.

    Add a Dataset   

    1. In the Dataset dialog, select the General page and enter the name of the dataset, 'FactSales'.
    2. Go to the Query page and enter the following query to fetch the required fields:
      Query
      Copy Code
      $.value[*]
    3. On the same page, add a calculated field:
      Field Name Value
      ProductCategory =Switch([ProductKey] < 116, "Audio", [ProductKey] >= 116 And [ProductKey] < 338, "TV and Video", [ProductKey] >= 338 And [ProductKey] < 944, "Computers", [ProductKey] >= 944 And [ProductKey] < 1316, "Cameras", [ProductKey] >= 1316, "Cell Phones")
    4. Click OK to save the changes.

    Create a Chart

    We will use the Chart Wizard dialog to configure chart data values and customization. The wizard appears by default if you have a dataset added to your report. See the topic on Chart Wizard for more information.

    1. Drag-drop Chart data region onto the design area. The Chart Wizard dialog appears with an option to select the data and the chart type.
    2. Select the Dataset Name as 'FactSales' and the Chart Type as 'Polar'.
    3. Click Next to proceed. Here, we will define a data value to display the sales amount for different product categories in the chart.
    4. Under Choose Data Values, add a new data value, and set its properties as below.    
      Field Aggregate
      =[SalesAmount] Sum
    5. In Choose Data Category, set Field to =[ProductCategory]. We will add more customizations to the category in later steps.        
    6. Click Next to preview your chart.
       Polar Chart Dialog Box
      You can also modify the chart palette and do other customizations as the last step in the process of chart creation. Or, you can exit the wizard and access these smart panels as explained below. 

    Set Advanced Customization

    Now that the chart is configured with data values, let us do some customizations on the chart elements using the smart panels.

    Plot Settings

    1. To open the smart panel for advanced plot settings, right-click 'Plot-Plot1' on the Report Explorer and choose Property Dialog.
    2. Go to the Categories tab. Here, we will sort the product categories in increasing order of their sales amounts. So fill in the following settings:
      Field Settings
      Sorting field =[SalesAmount]
      Sorting direction Ascending
      Sorting aggregate Sum
    3. Go to the Encodings page > Color tab, add a new value and, set the Expression to =[ProductCategory].
    4. Go to the Labels page > General tab and set the following properties.
      • Template: {categoryField.value}
      • Text Position: Outside
      • Offset: 30
    5. Then, navigate to the Appearance tab and set the following properties.
      • Font > Size: 12pt
      • Font > Color: DimGray
    6. Click OK to complete setting up the plot.
    7. With 'Plot-Plot1' selected, go to the Properties window and set the StartAngle property to '90' to set the start angle of the plot.

    Y-Axis

    1. To open the smart panel for advanced Y-axis settings, right-click 'Y-axis' from the Report Explorer and choose Property Dialog.
    2. Go to the Title page and remove the text from the Title field to hide the Y-axis title in the chart.
    3. Go to the Labels page > General tab and set the following properties.
      • Format: Currency (with 0 decimal places)
      • Angle: -90
    4. Then, navigate to the Appearance tab and set the following properties.
      • Font > Size: 12pt
      • Font > Color: Black
    5. Go to the Line page and uncheck the Show Line option.
    6. Go to the Major Gridline page and set the following properties.
      • Grid appearance > Show Grid: Check-on
      • Grid appearance > Width: 0.25pt
      • Grid appearance > Color: #cccccc
      • Grid appearance > Style: Dashed
    7. Go to the Scale page and set the following properties.
      • Scale Type: Logarithmic
      • Logarithmic base: 10
    8. Click OK to complete setting up the Y-axis.

    X-Axis

    1. To open the smart panel for advanced X-axis settings, right-click 'X-axis' on the Report Explorer and choose Property Dialog.
    2. Go to the Title page and remove the text from the Title field to hide the X-axis title in the chart.
    3. Go to the Labels page and uncheck the Show Labels option to hide the data labels.
    4. Go to the Line page and uncheck the Show Line option.
    5. Go to the Major Gridline page and uncheck the Show Grid option to hide the gridlines.
    6. Click OK to complete setting up the X-axis.

    Chart Palette

    1. To open the smart panel for advanced chart settings, right-click 'Chart' on the Report Explorer and choose Property Dialog.
    2. Go to the Palette page and  add the following colors.
      • #f26324
      • #1fd537
      • #e40010
      • #8fcd37
      • #00b32c
    3. Click OK to complete setting up the chart palette.

    Legend - Color

    1. To open the smart panel for the legend, right-click 'Legend - Color' on the Report Explorer, and choose Property Dialog.
    2. Go to the Layout page and check the Hide Legend option.
    3. Click OK to save the settings.

    Chart Header

    1. To open the smart panel for the chart header, right-click 'Header' on the Report Explorer and choose Property Dialog.
    2. Go to the General page and set Title to 'Sales by Category'.
    3. Go to the Font page and set the properties as below.
      • Size: 24pt
      • Color: #3da7a8
    4. Click OK to complete setting up the chart header.
      You may want to resize the chart.
         Polar Chart at Design Time
      Note: We use stub data at design time and not real data. So to view the actual final chart, you need to view the chart on preview.
    5. Once you are done with configuring and customizing the chart, press F5 to preview the report.