Grapher GRF Files
Grapher GRF files contain all of the information necessary to reproduce the graph, except for the data. When you save a Grapher file (*.grf), all the scaling, formatting, and parameters for the graph are preserved in the file. Grapher GRF files save a link to the data and do not store the data internally in the file. For example, if a GRF file needs to be sent to a colleague, you would need to send the data file(s) used to create the graph, in addition to the GRF file. This format is preferred for graphs where the data changes and needs to link to the external source data file.

Grapher GPJ Project Files
Grapher GPJ files store all of the information necessary to reproduce the graph, including embedding the data. All scaling, formatting, and parameters for the graph are preserved in the file. If a GPJ file needs to be sent to a colleague, you would only need to send the GPJ file. This format is preferred when you want to have the data and the graph contained in a single file and the data does not change often. The graph is not automatically updated when the original data is changed.

Grapher GRT Template Files
Grapher GRT files are used to create a template with set graphing preferences. A saved template file does not contain a reference to a specific data file. This means that once the template graph is created, you can use the template with any data set. You can use the template to set options such as the number of decimal places on axis tick mark labels, label angles, axis labels, graph titles, line plot colors, fill colors, symbol size, or any other graphing option. If a GRT file is sent to a colleague, they can use their own data set with the file to create a graph based on the specifications in the template file. This format is preferred when the layout of the graph needs to remain consistent with a variety of similarly formatted data files.

Updated March 6, 2020