I select a column chart for symbology in ArcMap.
How do I put the values of the parameter under the columns?
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It only takes a minute to sign up.Sign up to join this community
I am not sure how to do this from the symbology tab, however a possibility would be to work with the labeling of the points (assuming the symbology is based on a point feature). Using the Maplex Labeling Labeling Engine (assuming you have ArcMap 10.3 or more, or an Advanced License for older versions).
If you are using a Polygon Feature, try converting the Polygon to a Point Feature at its centroid and use that for labeling the values you want to use - or even the symbology)
See here for a detailed explanation: ESRI Tutorial for Enabling the Maplex Engine
This gives you more functionality when it comes to placing labels. So you should be able to place the symbology, and control where the label is placed beneath it.
You can change the X and Y offsets of both the labels to ensure the labels and symbols are aligned as you need.
To find the options of the offsets: "Labels Tab" -> "Symbols" -> "Edit Symbol..." -> "General"