.GCX File Extension
File TypeGrapher Graph File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is a GCX file?
2D or 3D graph created with Grapher, a graphing program included with Mac OS X; can create graphs from standard, logarithmic, and polar equations; includes zooming and animation capabilities.
The Grapher program is located by default in the /Applications/Utilities folder.