A bullet chart is a variation of a bar graph developed by Stephen Few. Seemingly inspired by the traditional thermometer charts and progress bars found in many dashboards, the bullet graph serves as a replacement for dashboard gauges and meters. Bullet graphs were developed to overcome the fundamental issues of gauges and meters: they typically display too little information, require too much space, and are cluttered with useless and distracting decoration. The bullet graph features a single, primary measure (for example, current year-to-date revenue), compares that measure to one or more other measures to enrich its meaning (for example, compared to a target).
Metrics- At Least 2 metrics are required for this visualization to be meaningful. A base Metric M1, a target M2. Additional target metrics M3, M4, etc can be added as shown below. Attributes - 1 or more attributes can be included. Use as Filter Option - Available
Bullet chart plot bands can be defined based on metric aggregations, similar to bullet chart type in Vitara Micro Chart. By default, the bullet chart will plot 3 bands based on ‘percentile’ function on the metric applied in the ‘Bar’ drop zone.
We can edit these default bands and can apply different aggregation functions for different bands. As shown in the below screenshot hover the cursor on the chart, click on the ‘Edit’ button to get a properties popup window.
By default, all three bands are plotted based on the ‘percentile’ value of the metric. We can also make the bands plot using fixed values.
In the property editor, go to bullet tab and select ‘Fixed Value’ from the Metric dropdown. Set some value in the ‘Fixed Value’ textbox. Repeat this process for whichever bands should have the ‘fixed value’. See the screenshot below.
And the bands should look like this:
In the business point of view, certain part of the chart needs to be highlighted to draw more attention from the desicion makers. For example, highlight the stores where total sales is greater than a specific value or highlight the top 10 products whose sales is high during last year’s winter. Thresholds are very useful objects in these use cases.
Thresholds will display some conditional formatting in a chart to highlight certain data points depending on predefined criteria.The criteria are attribute or metric qualifications. If a qualification’s expression evaluates to TRUE, the report displays the threshold. We can also include markers in thresholds.
To apply thresholds in vitara charts, hover the cursor on the chart. Vitara chart will display an ‘Edit’ button. When you click on this ‘Edit’ button the properties window will pop out. Select the thresholds tab to open threshold editor. In the window you can add a new threshold or delete any existing threshold or modify the existing threshold.
Note: From 4.6 version we can apply thresholds using attributes. The source drop down box in the threshold editor window will list all the attributes and metrics in the chart. we can select an attribute as source and define a threshold condition.
In the threshold editor window apply source, target, threshold condition and the other related information to set a threshold on the chart.
After giving all the inputs click on ‘Apply’ button.
Play by - animation shows the chart for each element of the first attribute. For more details about the play by feature please refer to play-by.
The steps to set a background image for all Vitara charts are explained in backgroundImage.