Time series data visualization example
Summarize
Summary of Time series data visualization example
This example guides ServiceNow customers through creating and enhancing a time series data visualization to track incident metrics over time. It demonstrates how to start with a simple indicator, such as the number of open incidents, and progressively add complexity by incorporating trends, breakdowns by priority, and comparisons with new incidents. The process leverages the Data Visualizations feature in ServiceNow’s Unified Navigation.
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Key Features
- Creating a time series visualization: Begin by selecting the indicator data source "Number of open incidents," which is conveniently available under Suggested data sources with a recognizable icon indicating it’s an indicator.
- Configuring date ranges: Use the Configuration panel’s Date range section to display the full available data range, ensuring the visualization reflects all relevant dates.
- Adding trend lines: Enable trend display to help viewers understand the direction of incident counts over time.
- Grouping data by priority: Utilize the Group by section to break down open incidents by priority, generating separate lines for each priority level. Note that enabling grouping disables additional information beyond forecasts in the Additional settings.
- Comparing multiple indicators: Add a second indicator, "Number of new incidents," to the same visualization for side-by-side comparison.
- Customizing visualization types per metric: Change visualization types independently for each metric (e.g., columns for open incidents and lines for new incidents) to improve readability.
- Adjusting legends for clarity: Increase legend item width to display full priority names, enhancing viewer understanding.
- Saving and sharing: Save the completed visualization for dashboard inclusion and, with appropriate roles, add it to the Data Visualizations library for reuse by other designers.
Practical Application
ServiceNow customers can use this approach to build clear, informative time series visualizations that track and compare incident metrics. The ability to group by attributes like priority and display multiple indicators in one chart supports detailed analysis and trend monitoring. Customizing visualization types and legends enhances usability and presentation, making dashboards more insightful for stakeholders.
Time series visualizations show the changes in data over time. This example starts with a single indicator data source and adds more complexity.
In this example you start wanting to show the change in the number of open incidents over time. Then you want to show the trend, and then the number of open incidents broken down by priority. Finally you want to compare the number of open incidents against the number of new incidents.
- First you search for Data Visualizations in the Unified Navigation and select Create data visualization
- In the empty new data visualization, you select Add data source.
- You want to use the indicator Number of open incidents. Fortunately, this indicator has been used before and is listed under the Suggested data sources, saving you the trouble of searching for it. You can tell that Number of
open incidents is an indicator data source because of the little column-and-trend icon next to it.
- You return to the visualization and see that the Line type has been selected by default. Line is the most common type of time series, and a time series is the usual visualization for an indicator. You also have an open
Configuration panel for this data visualization, next to the line visualization. The visualization changes in real time as you configure it.
- The data presentation doesn't look so great, because you only created the indicator on January 11. Fortunately, the Configuration panel has a Date range section where you can trim the dates that are shown. In this case, you
select Show maximum range, and it shows all the dates for which there are data, but only those dates.
- You would also like to see what more information you can give about this data, so you expand the Additional settings section. For indicators, these settings are the same as the KPI Details chart options. For more information, see Chart options in KPI Details under the KPI Details documentation. If you have the necessary roles, you can set targets and thresholds for an indicator in KPI Details.
- You decide to show the data trend, to give the viewer an idea of where the indicators were heading before the Christmas break.
- Now you have a new task, which is to duplicate this data visualization but split up the number of incidents into groups according to their priority. You group data on a time series visualization in the Group
by section of the Configuration panel. So you expand that section and discover that there is already a Priority breakdown for the Number of open incidents indicator. You select that breakdown.
- You get a separate line for every Group by value. Here you see that you can no longer show the trend. If you expand the Additional settings section in the Configuration panel again,
you see that no extra information besides the forecast can be shown now that you have set a Group by value.
- Now you have an additional requirement, which is to display the Number of new incidents indicator in the same visualization, for comparison. To show this indicator, you expand the Data section in the
Configuration panel and select + Add data source under Data sources.
- Then you search for the Number of new incidents indicator and add it.The result is a new line in your visualization for the Number of new incidents.
- You find this difficult to read and aren't sure that this is the best visualization to use. After reading Use cases for different time series visualization types, you decide to change the visualization to a column display.
- This is certainly an improvement, but you think you could do better still.
- Fortunately, you can set different visualization types for different metrics. You go to the Metrics tiles and expand the menu under the visualization type icon for Number of new incidents. Here you choose the Line visualization
again. You can only do this if you have more than one metric.
- You also have the option to set different Y-axes for Number of open incidents and Number of new incidents, through the More options menu on each Metric tile. However, the scales for the two data sources are not different enough
for this to help.
- The visualization is still a little busy, but a viewer can point their cursor to a column and see the breakdown of scores for that date.
- The last thing you do is to make the legends more readable. Right now the entries are truncated before a viewer could see what each priority actually is. So you try expanding the legend item width to 300px.
- That's it! You save the visualization, which is ready for you to add to dashboards. If you have the right roles, you can save the visualization in the Data Visualizations library for other dashboard designers to use.