When creating Calendar Heat Charts, the symbology defaults to Natural Breaks (Jenks) and if the dataset does not contain a value of "0" the lowest classification is set to less than or equal to the lowest value. I would like an option to set the minim value to "0", so it can be easier to identify which intervals (day of week & hour of day) have no value.
Of course, a user can set manual breaks and set one to "0", but this then limits functionality with Map Series and chart updates on extent as the breaks will be consistent across all pages, when this may not make the most sense. In addition to this challenge, according to the documentation for calendar heat charts (https://pro.arcgis.com/en/pro-app/3.4/arcpy/charts/calendarheat.htm), manual breaks is not one of the classification methods, so if a user wishes to automate this process it is not possible to overwrite the minimum value.
Ideally, the new feature would allow the user to still use natural breaks and check a box that adds a classification for 0.
