How do I automatically set a color gradient based on date. I want to be able to visually establish a how my data set may have changed through time, specifically in a triangular plot.

I solved the problem by setting up a FDMemTable to provide data to the chart. As my Query steps through it's data, it triggers an OnDataChange event. I use this event to empty the MemTable and then copy the values I need from the Query to the MemTable. It works perfectly.

Maybe I need to provide more detail. I have a series of records in a table that has three values I want to place in a stacked bar chart - Total Budget, Current Invoice, and Previous Invoices. As the report generator steps through the table, it needs to provide a chart based on the three fields in th...

How can I limit a stacked bar chart to a single record from a query? I need to be able to have the chart appear to the user in a ReportBuilder Report based on current record. I have done this for 15 years or so in FastReports, but need to move beyond them for other reasons.

I am using a ternary chart (TeeChart Pro v2020.30.200525 32bitVCL) in Delphi 10.4 and can assign Vertex Titles at design time; however, they default back to A, B, and C at run time. How do I rectify this behavior? Why do the values assigned at design time not carry through to run time?