Overview
Cost Class Curves plots your selected cost classes as spline curves on a single chart, letting you compare how Budget, Actual, EAC, and any other configured cost classes accumulate across the project timeline. This makes it easy to spot when actuals begin to diverge from budget, or to compare a current estimate against previous baselines. A data grid below the chart shows the exact values for each period alongside the chart.Prerequisites
- Select a project and at least one cost class. The chart does not render until both are selected.
Reading the Chart
Each selected cost class appears as a separate spline curve on the chart. The horizontal axis is the project timeline; the vertical axis is cost. Toggle between two views:- Cumulative — Each data point shows the total cost accumulated from the project start through that period.
- Period — Each data point shows only the cost incurred in that specific period.
Available Filters
| Filter | What It Controls |
|---|---|
| Project | The project to analyze |
| Cost Class | One or more cost classes to plot (select multiple to compare) |
| Cumulative / Period | Toggle between cumulative and period-by-period views |
| Axis | Switch between Monthly and Yearly time increments |
| WBS | Limit the curves to a specific WBS element |
| Work Package | Limit to a specific work package |
| CAM | Limit to a specific Control Account Manager |
| Start Date / End Date | Zoom the chart to a specific date range |
Summary Data Grid
Below the chart, a data grid shows the cost values for each selected cost class by period. This grid mirrors the chart’s current view (cumulative or period, monthly or yearly) and provides the exact figures behind each curve.Exporting
Click Export to download a multi-sheet Excel workbook. The chart is embedded as an image in the export alongside the summary data grid.Saved Views
Cost Class Curves supports named saved views that preserve your filter selections and column layout. Use the view selector in the toolbar to save and reload your own named views.