Compare the current drawing either to a different drawing or compare it to a previous version of your drawing as maintained on a supported cloud account.
As your design progresses, it becomes more difficult to remember what was changed from one revision to the next, especially when working in a remotely distributed team. This feature provides a way to perform a visual comparison between two drawings or two revisions of a drawing. Color and revision clouds highlight the differences in the current drawing as you work.
The ability to compare drawings is accessible from two different workflows:
The COMPARE command provides a way of comparing the current drawing with a different drawing that you specify.DWG History
The DWGHISTORY command displays a palette from which you can compare the current drawing with previous versions as maintained by a supported cloud storage provider. Supported cloud storage providers include Dropbox, Box, and Microsoft OneDrive.
During the comparison process, the DWG Compare feature identifies objects that have been modified, added, or removed between the two drawings. For example, consider these two highly simplified drawings. Each drawing has differences that are not in the other drawing.
Let's say that drawing 1 is the previous version of a drawing, and drawing 2 is the current drawing.
When the COMPARE command is started, the DWG Compare toolbar displays at the top of the drawing area when you specify the comparison drawing, drawing 1 in this example.
The result of the comparison is displayed in the current drawing, as shown below.
You can specify different colors in the Settings panel of the DWG Compare toolbar. The Settings panel also provides additional display controls.
From the DWG Compare toolbar, you can import differences from the compared drawing into the current drawing. Only those objects that are different in the comparison drawing can be imported into the current drawing. This command provides an efficient method to reconcile the current drawing with an earlier version.
Imported differences automatically turn gray because they are now present in both drawings.
You can export the results of a comparison into a new snapshot drawing for reference. The snapshot drawing maintains the visual appearance of the comparison and is named using a combination of the drawing names.
The limitations of the DWG Compare feature include the following: