Compare Gerber data files

• To identify changes made on Gerber data comparing with the original created Gerber data,
• for verification purpose and or documentation, the View "Color mode" can be used to even find the smallest
• change in seconds.

• Load the two Gerber data file from one of the layers from the board by;  File load [F3] or
• drag & drop the files into the Viewplot icon.

• Next switch to the Viewable objects.  View Viewable objects or [Ctrl A]

• Switch the Color mode from "Normal" to "MERGEPEN" and OK to merge the data from both layers,
• The merged data will be displayed in a Merge color based on the two original colors from the layers.

• Data that isn't equal on both layer will remain in there original color.
• By panning and zooming the board can be quickly inspected.

• The Purple colored data is equal on both layers, the original color is used when information isn't equal.
• Changes can be found by Panning and Zooming. z,Z Ctrl+LMB

• Switch the Color mode from "Normal" to "NOT" and OK to ignore the common data from both layers,
• Only the data that isn't equal on both layers will be displayed in White.
•  
• Even the smallest change between the data can now be found.
• Zoom in to the specific area with the zoom commands z,Z or Ctrl+LMB

• Switch to the "MERGEPEN"  or normal color mode to identify what is changed in more detail.