Baseline Comparison
Compare your current project schedule to saved baselines on the YAPL Gantt timeline. Track schedule and effort variance, identify slippage with visual overlay bars, and measure project performance.
Baseline Comparison
Baselines capture a snapshot of your plan at a specific point in time. Comparing your current schedule to the baseline helps you track variance, identify slippage, and understand schedule performance.
Baseline comparison requires a Professional tier subscription.
What is a Baseline?
Definition
A baseline is:
- A saved snapshot of your plan
- The approved schedule to measure against
- A reference point for variance analysis
What Gets Captured
A baseline records:
- Task start and end dates
- Task durations
- Effort estimates (planned hours)
- Dependencies
- Milestone dates
Creating a Baseline
When to Baseline
Create a baseline when:
- Project is approved to start
- Major re-planning occurs
- Scope changes are approved
- New phases begin
How to Create
- Open your plan
- Navigate to Settings or Versions tab
- Find baseline options
- Click Create Baseline or Set Baseline
- Name and save the baseline
Baseline Naming
Use descriptive names:
- "Initial Baseline - Jan 2025"
- "Post-Change Order #3"
- "Phase 2 Approved"
Viewing Baseline Comparison
Enabling Baseline Overlay
- Open Timeline view
- Find view options
- Toggle Show Baseline
- Baseline appears as shadow bars
Visual Display
Baseline appears as:
- Gray or hollow bars behind current bars
- Different colored indicators
- Comparison markers on milestones
Reading the Display
| Visual | Meaning |
|---|---|
| Current bar right of baseline | Task is late |
| Current bar left of baseline | Task is early |
| Bars aligned | Task on schedule |
| Current bar longer | Duration increased |
| Current bar shorter | Duration decreased |
Variance Analysis
Schedule Variance
Compare dates:
| Metric | Calculation |
|---|---|
| Start Variance | Current Start - Baseline Start |
| Finish Variance | Current Finish - Baseline Finish |
| Duration Variance | Current Duration - Baseline Duration |
Variance Indicators
Positive variance (late/longer):
- Red highlighting
- Plus sign (+5 days)
Negative variance (early/shorter):
- Green highlighting
- Minus sign (-3 days)
Zero variance:
- No highlighting
- On track
Effort Variance
Tracking Effort
If using effort tracking:
| Metric | Meaning |
|---|---|
| Baseline Effort | Originally planned hours |
| Planned Hours | Current estimated hours |
| Actual Hours | Work completed to date |
| EAC | Estimate at Completion |
EAC Formula
EAC = Actual Hours + Remaining Hours
Variance = EAC - Baseline EffortEffort Performance
| Variance | Meaning |
|---|---|
| Positive | Using more effort than planned |
| Negative | Using less effort than planned |
| Zero | On track |
Multiple Baselines
Managing Baselines
You may have multiple baselines for:
- Different approval points
- Phase boundaries
- Major changes
- Version comparisons
Selecting Baseline for Comparison
- Open view options
- Select which baseline to display
- Switch between baselines as needed
Baseline Comparison Grid
Compare all baselines:
| Baseline | End Date | Variance |
|---|---|---|
| Initial | Mar 15 | - |
| Revision 1 | Mar 22 | +7 days |
| Current | Mar 29 | +14 days |
Progress vs. Baseline
Combining Views
View progress alongside baseline:
- Baseline shows planned schedule
- Progress shows completion
- Together show performance
Status Assessment
| Current Date | Progress | Assessment |
|---|---|---|
| Behind baseline | On track | Recovering |
| Behind baseline | Behind | At risk |
| On baseline | On track | Healthy |
| Ahead of baseline | Ahead | Excellent |
Baseline Reports
Variance Report
Generate reports showing:
- All task variances
- Summary statistics
- Trends over time
What to Include
| Metric | Use |
|---|---|
| Schedule variance summary | Executive overview |
| Task-by-task variance | Detailed analysis |
| Critical path variance | Risk assessment |
| Milestone variance | Key dates tracking |
Best Practices
Baseline Management
- Create baseline at project approval
- Name baselines meaningfully
- Document reason for new baselines
- Keep number of baselines manageable
Review Frequency
- Compare to baseline weekly
- Report variance to stakeholders
- Investigate significant variance
- Update forecasts based on variance
When to Re-Baseline
Consider re-baselining when:
- Approved scope changes occur
- Major schedule revisions needed
- Project restart after hold
- Original baseline no longer relevant
Re-baselining should be a deliberate decision. Too frequent changes make variance tracking meaningless.
Baseline Permissions
Who Can Manage Baselines
| Action | Permissions |
|---|---|
| View baseline | All with plan access |
| Create baseline | Team Leads, Owners |
| Delete baseline | Team Leads, Owners |
| Compare baselines | Professional tier |
Troubleshooting
Baseline Not Showing
- Verify baseline exists
- Check view option is enabled
- Ensure Professional tier subscription
- Try refreshing page
Variance Seems Wrong
- Verify correct baseline is selected
- Check if task dates changed
- Review baseline capture date
- Compare manually if needed
Cannot Create Baseline
- Verify you have permission
- Check plan has tasks with dates
- Ensure plan is saved
- Try from Settings tab
Baseline Data Missing
- Baseline captures point-in-time data
- New tasks won't have baseline
- Deleted tasks may not appear
- Check baseline creation date
Related Topics
- Timeline View - Viewing the chart
- Critical Path - Schedule analysis
- Plans - Plan versioning
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