File tab

 

The File tab saves specific map projections and establishes a default map projection for all new projects.  

Background

In a large multi-user environment, these administrative options are useful for leveraging the geodetic expertise of a few and applying it to several projects or to the company as a whole.  Saving a map template can be useful for making a backup or for propagating a specific map projection from one Petra project to another.  Similarly, setting a default system map projection can be useful when all Petra users are working in a similar geographic environment.

Using the File tab

Using Map Projection Template

Map Projection Templates simply store the settings of the currently saved map projection in an external *.MPT file.  Especially when using a non-standard custom projection, template files are useful for making backups of Petra map projections as well as quickly copying the map projection from one project to another.  To save a map projection template file, select the save button.  To load an preexisting template, select the load button.

 

 

Setting a Default Map Projection

The best time to set a project’s map projection is at the very beginning. A default projection ensures all new projects system-wide will automatically use one predefined map projection.

 

To set a system-wide default projection, select the “Save System Map Projection…” button under the File tab of the Map Projection Settings window. This creates a new file in the system-wide PARMS directory called DEFPROJECTION1.BIN.  This file contains the project’s current map projection.  Setting a default projection can be useful for companies or field offices that are focused on a specific basin where one map projection is always applicable.  

 

 

When new projects are created, Petra will ask the user if they want to use the default map projection.