Preferences: projection, GPS source, stylus and capture accuracy

Preferences window

Projection:

Allows selecting the map projection of the current activity. Tapping the edit icon opens a window where you can search for any of the Proj4-format projections available in the project, either by its SRID, description, or definition.

This selector is organized as a resource manager, with the same look as the Resource Manager: SRID, Name, and Proj4 columns -all sortable by tapping their header- and a search box that filters among thousands of projections without delay, because searching and sorting are resolved in the database.

The coordinate system of the active map is pinned at the top of the list -for example “Map system · 4326”-, so it can be chosen with a single tap without having to search for it among all the available projections.

From the same selector you can create, edit, or delete your own projections. The new button opens a dialog that asks for Name, the Proj4 definition (mandatory; before saving it is validated by building the transformation to WGS84, thus avoiding saving an invalid definition) and, optionally, the WKT/srtext (descriptive only). To edit or delete an existing projection, use its row menu (Edit/Delete); when editing, the SRID is fixed (it cannot be modified). You cannot edit or delete the projection currently selected for the map or for any project resource.

Drawing node interval:

Defines the distance between nodes when drawing freehand on the map. The unit depends on the projection used. This option only applies to the current activity's map.

Support stylus:

General option, only effective on devices with a built-in EMR stylus (for example, S Pen). It lets you distinguish between the pen's touch for drawing during geometry editing and fingers for panning and zooming. The pan button on the map will only be visible while this option is disabled.

Auto-Smooth Geometries After Operation:

Applies an edge smoothing (see Geometry Editor) after performing operations between two geometries (difference, intersection, union, etc.). When enabling it, the minimum and maximum acceptable values will be requested. Option valid for the current activity.

Auto-Repair Geometries Before Operation:

Checks and repairs geometries before running an operation between two of them during editing. This prevents unexpected results in malformed geometries. It can be set to run always, only when the operation fails, or be completely disabled. Applies to the current activity.

Absolute snap:

(see Snap in Geometry Editor). Option applicable to the current activity.

GPS source:

When editing this option, a window opens to select the GPS to use in the activity. You can choose between the built-in positioning hardware or any Bluetooth device previously paired (with Bluetooth enabled). To connect an external device, it must transmit coordinates using the NMEA protocol. Option valid at the project level.

Minimal capture precision required:

Only available for core logging activities. It lets you set the minimum precision the GPS must reach before creating a geopositioned tuple (see Core Logging).

Keep GPS on during core logging:

Also exclusive to core logging. Keeps the GPS on continuously to maintain precision. If disabled, the GPS will only turn on when recording a point, which may slow the process but saves battery.

Auto center:

Centers the map on the GPS position when the cursor approaches the edges or falls outside the limits.

Tracks node interval:

Defines the distance between nodes when capturing tracks (see Tracks). The unit depends on the projection used. It only applies to the current activity's map.

Hide layers by type:

This option affects “Hide the rest” in the user layers menu, or holding down the button on a layer. If enabled, only layers of the same type (raster or table) will be hidden. (See Layer menu).

Use native Camera:

When enabled, photos will be taken with the device's native application. Otherwise, the camera provided by the app will be used, which may differ in features or image quality.

Limit text inputs to 254 characters:

Restricts the text fields of the geocoding assistant to 254 characters, making them compatible with some limited export formats.

Import always z component:

When importing a table with 2D coordinates, the Z component is added with a value of 0.0.

Large touch areas:

Some interface elements are enlarged to make them easier to use.

Activate tutorials:

Reactivates the project's tutorials that have been disabled.

Help:

Opens the user assistance menu, with information about the version and the license.