The analytics in Kanbanize work per board. Click the Analytics icon on the top of each board to access the Analytics page.
The Analytics screen presents 5 categories: Cycle Time, Throughput, WIP, Flow, Forecasting, each available as a tab item on the page. Click on a tab button to view the charts for each of the respective metrics. The Heat Map belongs to the Cycle time category.
Note: Before start using the analytics make sure that you have configured the Cycle time tracking for the respective board. To learn how to configure cycle time per board, please check the dedicated article.
Introduction to Heat Map
The Heat Map is a graphical representation of data (in Kanbanize: cycle time) on a matrix that uses various shades of different colors in order to help distinguish the collected data in each cell of the matrix.
If you have to know which area needs the most attention, a heat map shows you in a visual way that's easy to assimilate and make decisions from.
The Heat map shows you where the most time gets accumulated. The red color always stands for higher time values.
- On the "x" axis is the actual workflow of the board (it reflects the workflow stages)
- On the "y" axis, you can choose different topics for example: type, assignee, priority, etc.
How to set up the Heat Map?
From the left side of the panel, you can control which data you can see on the chart within a predetermined time frame.
First, you define the timeframe ("Requested After" date and "Finished Before" date).
Important: The chart will visualize only cards that have entered your flow after the "requested date" that you define. In case that the cards were in your flow before the requested date and are completed within the "finished before" date, they won't be displayed.
Then you select the workflows that you want to analyze using the Heat map.
The chart takes into consideration all cards from the selected workflows. Note that you can add single or multiple workflows.
In addition, you can apply extra filters (Add cards filter). For example, you may want to see only cards with high priority or cards that are of a certain type.
Note: To further filter your data, please check the Item filter control in the most right panel (Item filter).
Once you have defined the workflow, you should select a topic. For example priority. 
What's that telling us?
Let's use the priority in the example below.
The heat map shows in which part of the workflow, the cards of high, critical, average priority take the most time. The graph accumulates the total cycle time that the cards spend in each of your workflow stages.
If there is an intersection on the Heat map colored in red, it signals that the cycle time of the tasks there is longer and that stage of your process needs attention. This visualization helps you easily find out the slowest part of the workflow and it is a good way to visualize bottlenecks.
In the example, below it seems that the cards with average priority take the most time. If you click on any of the intersections, the system provides a list with all cards that have passed through that stage. 
Hover on any Card ID to open the respective "Work Item Details" box. It contains specific information relevant to the card. In addition, you can check the time this card has spent in every stage of the workflow. 
Controls for this chart - customize your view
You can use the controls to change the "Heat Map" view as well as to apply additional filters. Please, check the short video below.
- Topic - select a property to change the values represented in the Heat map on the "y" axis.
- Color Pallette - the heat map uses a warm-to-cool color spectrum to show you which parts of your workflow need more attention.
- Show/hide data control that allows you to zoom in and out of a specific interval within the selected time frame.
- Item Filter - allows you to further refine the data that you want to be displayed on the Heat Map.
- Workflow Stages - deselect the columns in your workflow that you do not want to be visualized on the "x" axis.
