Plan compare or overlaying plans to easily see differences between another plan in the project or a revised plan. While comparing plans, you can count, measure, annotate and select items as usual.

Compare Plans

Easily compare construction plans with Groundplan’s compare / overlay feature.

Click details+ then click compare
Click to select sction
- Compare with a previous revision
  OR
- Compare with another plan
Click to select plan
Click compare plans

Interpreting the Plan Comparison

Colour is used to determine identical elements and differences in plans.

Colour	Explanation
Black	Identical lines/elements on both plans
Red	The plan being compared
Blue	The current plan If measurements or annotations are placed during the compare function, they will appear on this plan when the compare is cancelled.

Aligning Plans

Adjust plans when they are not aligned or have different dimensions.

Click align
Adjust the Plan till they are aligned
- Align - click, hold and drag the plan
- To pan - hold the space bar
- Re-size - zoom out and click, hold and drag the blue boxes
- Keep proportions - hold SHIFT while re-sizing
Once aligned, click align

💡 Use the select tool to move measurements and annotations if required.

Erased areas

Using the eraser tool will keep the erased sections hidden during compare mode. Erased areas will also cover the same parts of the plan you are comparing with.

Remove the erased sections to see the full comparison.

To restore the plan to its original form:

Select the eraser tool
Click restore original plan
Click Done

📝Note: Repeat the "erased" sections when using this option.
To restore erased areas - click undo before leaving the blank.

Restore only specific erased areas:

Select eraser tool
Hold CTRL / command ⌘ and click the black area/s to restore
Click done

Frequently Asked Questions

Can I compare plans with all measurements and annotations hidden?

Yes.

To view plans without measurements, annotations need to be moved off the plan.

To do this:

Click show & hide, then click hide all
Use group select to select all annotations
Relocate off the plan
Press ESC and complete the compare function
Click show all
Select the annotations using group select and click, hold and drag them back to the correct position on the plan

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Time-saving strategies
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Alternatively, visit the Groundplan Academy here for self-directed courses.

Comparing and overlaying plans to find similarities and differences