Creating a Ranged Thematic Map

A Ranged thematic map groups all records into ranges and assigns different colors, symbols, patterns or line style. For example, if you want to visualize the population of the world by growth rate, you would shade countries according to their reported growth rate amounts.

To create a Ranged thematic map, follow the steps given below:

  1. Click or touch the Add icon on the upper right corner of the map to open the Add panel.
  2. Click or touch the Create Thematic Map icon to create a thematic map.
  3. From the Layer Name drop-down list select a table on which you would want to apply thematic.
    Note: You can also create thematic on query data.
  4. From the Column drop-down list, select a column on which you would like to create thematic.
    Note: A Range Thematic can be created on a numeric column only.
  5. From the Thematic type drop-down list, select the Ranged thematic map.
  6. Enter a new name in the Thematic Map Name text box for the Thematic map or you may also retain the default name. The default name is a combination of a table name, column name and visualization name.
    Note: A thematic map name can be of maximum 50 characters. Special characters are not allowed in thematic map names.
  7. From the Method drop-down list, select to create ranges automatically using any one of the following methods.
    You can select from:

    • Equal Count- It has the same number of records in each range.

    • Equal Ranges- It divides records across ranges of equal size.
    • Standard Deviation- In this method the middle range breaks at the mean of your values, and the ranges above and below the middle range are one standard deviation above or below the mean.
  8. From the Interval, select range. It ranges from 2 to 16.
  9. From the Start Color box, select the start color of the range. The start color is same for all the map geometries.
  10. From the End Color box, select the end color of the range. The end color is same for all the map geometries.
  11. Select Map Geometries to style. You can choose from Polygon, Line or Point map geometries. By default, the predominant map geometry is selected.
    Note: This option is available only when selected table contains two or more type of geometry.
    Table 1. Map Geometries Options
    Option Description
    Border Style Select the border style from the list.
    Note: This option is available with polygon and line geometries only. If desired, you can turn the border off while creating Range thematic. It enables you to see the thematic view of a layer without the border.
    Border Color Select the border color from color palette.
    Note: This option is available with polygon geometries only.
    Border Width Select the size for border.
    Note: This option is available with polygon and line geometries only.
    Pattern Select the pattern from the list.
    Note: This option is available with polygon geometries only.
    Style Select the image icon from the drop-down list.
    Note: This option is available with point geometries only.
    Size Select the size of image icon.
    Note: This option is available with point geometries only.
  12. Click or tap on the Preview Legend button to preview legend range.
  13. Click or tap on the Create button.
    The thematic map is created and added as a top level map item. The thematic map also gets listed in the Map Legend panel. When you zoom out on the map a message Layer not visible at this zoom level may appear. This is because the zoom constraint settings was applied on the original layer on which thematic has been created.
  14. Save the map project. For example, click the Overflow icon next to the Map Layers and click Save project. When you save the project, the map project is saved along with any zoom constraint settings applied on the original layer.
    Note: If you do not save the changes in your Map Project, the changes will be lost on reloading the project or refreshing the browser.