View source for Difference (Overlay)

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==What the Difference overlay is==-->
[[File:Difference_overlay.png|thumb|250px|right|The Heatstress overlay is a grid overlay and has therefore a difference overlay.]]
The Difference overlay is an [[Overlay]] which displays the difference between the original and the maquette state of a specific [[Grid overlay|grid (dynamic) overlay]]. The difference overlay is therefore always linked to a specific grid overlay. This overlay is useful to see the impact of a certain [[Actions|action]] or [[Measures|measure]] in the 3D world on a certain overlay.
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==Additional information displayed in hover panel==
[[File:Additional_info.jpg|thumb|250px|left|The difference overlay of the Heatstress overlay and additional information in the hover panel.]]
When clicking on a specific location in the map of the difference overlay, the hover panel gives additional information over the difference in units related to the Grid overlay on that specific cell.
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==Adding and removing==

{{Editor ribbon|header=Geo Data|bar=Overlays}}

[[File:Show_difference_option.JPG|right|200px]]
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[[File:Show_difference.JPG|right|200px]]
{{Editor steps|title=add the Difference overlay|Select in the editor 'Geo Data' from the ribbon|Select 'Overlays' from the ribbon bar|Select the specific overlay from the drop down menu of where you want to see the difference of|In the panel on the right side of the Overlay check the Show Difference Option Box|In the Overlay ribbon, click on see Difference Map}}


{{Editor steps|title=remove the Difference overlay|Select in the editor 'Geo Data' from the ribbon|Select 'Overlays' from the ribbon bar|Select the desired overlay from the list of active overlays on the left panel|Select 'remove' from the bottom of the left panel|Confirm the removal in the pop up confirmation message}}

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