Parliament Chart

Also known as Hemicycle Chart

1. What is a Parliament chart?

A parliament chart is used to display the distribution of the data in the form of dots. Each area of dots represents each data point and makes up the total value normally in a semi-circle shape.

When to use a Parliament Chart?

A parliament chart is typically used to visualize categorical data with two dimensions. It is particularly useful when there is a need to compare the proportions or distributions of multiple categories across different groups or segments.

2. How to build a Parliament chart with example

The Parliament chart effectively presents the total number of countries within each region, utilizing varying column widths to represent the relative proportions of countries, allowing for easy comparison and identification of the distribution of countries across different regions.

  1. Click Click here to add your first chart

  2. In the menu, select Parliament to create a parliament chart

3. Parliament Chart Config

  1. Select the database you use to create suggested in the list

  2. Choose the table containing the data you use to create, then it will show you the list of fields included in the table

  3. Drag/drop or select the Legend properties

  4. Drag/drop or select the Value corresponding to the Legend properties

  5. Drag/drop or select the Sorting field to sort out the data in the chart (optional)

  6. Drag/drop or select the Filters field to emphasize a specific data (optional)

  7. You can see the visualization of your chart on the left side and select Settings to change the element’s settings


You can change the title of the chart, choose the font, color and size of the name. You can also add the subtitle and change its format.


You can change the style of the chart such as Parliament, Rectangle, or Circle.


The maximum data points represent the maximum number of dots can be displayed in the chart.


You can change the legend position (top, bottom, middle), input the name, choose the font, color and size of the name.


Data color can be set auto or you can choose your favorite colors.


If you turn the label on, you can choose its style to perform (percent, value, raw), choose the font, color and size of the label and its position.


You can change the background color of the chart.


When you hover over an area of the chart, a text box appears to display information about the data of that area. You can change the text color, font, and background.


Change the display unit, precision, and other functions

8. After building the chart visualization, click Add to create your chart.

9. Your chart will show up along with actions like sharing, editing, etc.

We hope that the above instructions will be useful to you. Let's have a look at our other articles to learn more about using other charts in data visualization with Rocket.BI.

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