Heat Map Viz
Overview
Details
The Heat Map Viz shows a grid of related measurements, with the color intensity relative to the metric value. You can use the Heat Map Viz to provide information at a glance, in a dashboard panel.
Daniel Spavin
daniel@spavin.net
I am a Splunk Professional Services consultant working for JDS Australia (https://www.jds.net.au), in Melbourne Australia.
Version Support
8.0, 7.3, 7.2, 7.1, 7.0, 6.6, 6.5, 6.4
Who is this app for?
This app is for anyone who wants to display several metrics on a small area of a dashboard.
How does the app work?
This app provides a visualization that you can use in your own apps and dashboards.
To use it in your dashboards, simply install the app, and create a search that provides the values you want to display.
Usecases for the Heat Map Visualization:
- Displaying server metrics like CPU, Memory, I/O, and Disk usage over time
- Comparing sales volume by category over time
- Showing related application metrics in a discreet dashboard panel
- Highlighting any metrics relative to other entities
The following fields can be used in the search:
- _time (required): The easiest way to construct a search is to use the | timechart command, with a by clause.
- category fields (required): Each field name will become a label on the side, with the values being used to set the color based on thresholds. The order of the fields determines the order shown in the viz.
Example Search
| gentimes start=-7 increment=4h
| eval "Server Availability"=random()%100, "Customer Satisfaction"=random()%100,"Server Performance"=random()%100, _time=starttime
| table _time, "Server Availability","Customer Satisfaction","Server Performance"
Tokens
Tokens are generated each time you click a cell. This can be useful if you want to populate another panel on the dashboard with a custom search, or link to a new dashboard with the tokens carrying across.
- Value: This is the numeric field for the cell you clicked. Default value: $hm_token_value$
- Label: This is the field name for the cell you clicked. Default value: $hm_token_label$
- Time: This is the '_time' field for the selection. Default value: $hm_token_time$
Save to Desktop
If you click the hamburger menu at the top right, you can download a screenshot of the current viz to your desktop:
Rounded Squares with Values
In additon to squares you can choose round cells. You also have the option of including the value in the cell:
Limits
The visualization is bound by the following limits:
Total results: 50,000
Release Notes
v 1.0.0
- Initial version
Issues and Limitations
If you have a bug report or feature request, please contact daniel@spavin.net
Privacy
No personally identifiable information is logged or obtained in any way through this visualization.
For support
Send email to daniel@spavin.net
Support is not guaranteed and will be provided on a best effort basis.
Third-Party Libraries
This visualization uses heatmap from ApexCharts
Release Notes
Version 1.2.0
v 1.2.0
- Label font size is now customizable.
- Fixed issue with Splunk 7.3.x showing 'undefined' on visualization options screen.
Version 1.1.0
v 1.1.0
- Added the option of putting the date in the tool tip. Several date formats are available to use.
- You can now turn off animation in the options menu.
- The visualization will resize when you change the panel size.
Version 1.0.0
v 1.0.0
Initial version