Baseline Comparison
Track schedule variance by comparing current plan to baseline in YAPL.
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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