Create Gantt chart in ArcGIS Dashboards with data expressions

DarrenLloyd__DOIT — Tue, 28 Oct 2025 15:36:42 GMT

I would like to create a Gantt chart in ArcGIS Dashboards to track dates/ duration days for a permitting timeline project. We have a permit process that requires multiple groups submit permits for a single location. Since Gantt charts are not native to the dashboard, I am planning to use a data expression. I found a post that references using data expressions to make a "quasi" Gantt chart, but I could use a little more specific assistance in the data types needed and execution of the data expression.

https://community.esri.com/t5/arcgis-dashboards-questions/gantt-chart/td-p/1310961

For example, I have a table with date fields and duration days.
Name = Traffic Study
Initial Assessment Date = 6/6/25
Initial Assessment Days = 8
Review Start Date = 7/7/25
Review Period Days = 45

I appreciate the help!

@jcarlson

@C_McNamara

Re: Create Gantt chart in ArcGIS Dashboards with data expressions

Neal_t_k — Thu, 06 Nov 2025 18:08:25 GMT

@DarrenLloyd__DOIT I have done something kind of similar but I preprocessed the data set to prior to importing it. For example instead of each row having a start date and a duration, I made a row for each day in the duration. So for your example it would be something like this

Traffic Study Initial Assessment 6/6/25

Traffic Study Initial Assessment 6/7/25

Traffic Study Initial Assessment 6/8/25 and so on

You would then have to assign an arbitrary value to each of your "Names" to get the separation. You can do this all with a new data expression. However it still comes out pretty rough looking and, at least as far as I took it, I wasn't able get different colors for the different "names" so I had to add a table to equate the labels with the name and types. Below is the expression, table and setup as well as the sample data set I made. Hopefully that gives you some ideas if you choose to pursue.

topic Re: Create Gantt chart in ArcGIS Dashboards with data expressions in ArcGIS Dashboards Questions

Create Gantt chart in ArcGIS Dashboards with data expressions

Re: Create Gantt chart in ArcGIS Dashboards with data expressions