Pozyx Analytics offers 2 types of heatmap: a time based heatmap and a tag based heatmap. You can switch between the 2 types by going into the heatmap options:

Time based heatmap

The time based heatmap shows you how long tags have been present at a certain location. On the following heatmap you can see that tags have been laying still on 3 spots.

But because the tags have been laying still for a while, and because the heatmap scaling is linear, a lot of detail is lost: As seen in the heatmap legend, the red areas indicate 14h 39m of tag presence, the green areas indicate 7h 19m of tag presence. A tag presence of just a couple of seconds will be completely blue and will thus be lost in the heatmap. A data transformation can bring back these details. There are 3 data transformations available: A square root, a cube root and a fifth root transformation. You can apply these by going into the heatmap options:

After applying a transformation to the data, a lot more detail is shown: As seen in the heatmap legend, the red areas still indicate 14h 39m of tag presence, but the green areas now indicate 7s of tag presence.

Tag based heatmap

The tag based heatmap works in a similar way as the time based heatmap, but instead of showing you how longs tags have been present at a certain location it shows you how many distinct tags have been present at a certain location.