QFieldSync

The QFieldSync plugin for QGIS helps preparing and packaging QGIS projects for QField.

QFieldSync tukee projektin valmistelua automatisoimalla seuraavat:

• Required steps for project setup (e.g. portable_project)
• Peruskarttojen luominen yhdestä rasteritasosta tai määritetystä tyylistä karttateemassa.
• Offline-muokkaustoiminnon määrittäminen ja synkronointi palauttaminen.

Työnkulku

Jotta saisit nopean yleiskatsauksen prosessista, tässä on lista tyypillisistä vaiheista:

1. Luo QField-paketti. Tämä on työkopio erillisessä folder.
2. Kopioi QField-paketti kohdelaitteeseen.
3. Mene ulos ja kerää aineistoa.
4. Kopioi muokatut aineistot takaisin työasemallesi.
5. Synkronoi muokatut aineistot tietokantaasi tai tiedostoihisi.

Asennus

Avaa QGIS:ssä laajennuskirjasto ja etsi qfield sync. Valitse laajennus luettelosta ja napsauta Asenna.

QField Sync QGIS-laajennusten arkistossa

Määritys

The project configuration is saved in the master .qgs project file. This way it is possible to pre-configure a project once and use it repeatedly.

Määritä projekti

Tason määritys

Määritä projektitasot

In the project configuration dialog, an action can be defined for each layer individually. Depending on the layer type, different types of actions are available.

Copy

The layer will be copied to the package folder. This is only available for file-based layers.

No action

Tason lähde jätetään koskemattomaksi. Tämä on saatavilla vain ei-tiedostopohjaiset tasot, kuten WMS, WFS, Postgis...

Offline editing

A working copy of the layer is copied into the package folder. Every change which is done in the packaged project during work is recorded in a changelog. When synchronizing the changes back later on, this log will be replaced and all changes also be applied to the main data base. There is no conflict handling in place.

Remove

The layer will be removed from the working copy. This is useful if a layer is used in the basemap and will not be available in the packaged project.

Properties

There are some additional options to fine tune your QField project in the properties:

1. Permissions: Disable options for feature addition, feature deletion, attribute editing, or geometry editing.

2. Set up the attachment default naming, please refer to the Configurable picture path

3. Set up the maximum number of items shown in the relation editor widget.

QFieldSync Layer Properties

Configuring maximum items visibility for QField

To adjust the maximum number of visible items in a relationship within QField, follow these steps:

1. Access Layer Properties Dialog:

   • Open the layer properties dialog in QGIS where the relation editor is displayed.

2. Navigate to QField Tab:

   • Locate the QField tab, typically located at the bottom of the layer properties dialog.

3. Modify Relationship Configuration:

   • In the "Relationship configuration" section, locate the section corresponding to the relationship you want to modify.

4. Adjust Visibility Limit:

   • Within the row for the desired relationship, find the "Maximum number of items visible" column.
   • Delete the existing numerical value to set the visibility to "unlimited", the field will transform from a number (default 4) to "unlimited".
   • Click "Apply" to save the changes to the layer properties.

Maximum items visible for relation

QField Visible items

Taustakartan määrittely

Taustakartta on rasteritaso, joka on pakatun projektitiedoston alimmainen taso.

Jos taustakarttavaihtoehto on käytössä, taustakartta renderöidään aina kun projekti paketoidaan. Kiinnostava alue - alueen laajuus, joka renderöidään - valitaan paketoinnin aikana.

Taustakartalle on kaksi mahdollista lähdettä:

Taso

A raster layer is useful for taking an offline copy of an online layer like a WMS or to take a working copy of an unsupported format like an ECW or MrSID layer.

Karttateema

A map theme is useful for creating a base map based on a combination of several layers with styling. These layers can then be removed from the working package and do not need to be rendered on the device. This can save some disk space and battery on the device.

The tile size defines the spatial resolution. It determines the number of map units per pixel. If the map canvas CRS has meters as units and tile size is set to 1, each raster pixel will have a spatial extent of 1x1 m, if it is set to 1000, each raster pixel will have a spatial extent of 1 square kilometer.

You can package a raster layer into an MBTiles file with multiple zoom levels for offline use.

• Tiles min zoom level: Defines the minimum zoom level for the raster tiles. A lower value increases the spatial coverage but the spatial resolution is limited. (Default: 14)
• Tiles max zoom level: Defines the maximum zoom level for the raster tiles. A higher value increases detail but may require more storage space, as well as increase the duration of the offline export. (Default: 14)

Base Map Configuration QFieldSync

Note

Base map generation is disabled on QFieldCloud. You can still manually add your basemaps by running "Generate XYZ tiles (MBTiles)" or "Convert map to raster" algorithms in the processing framework.

Offline-muokkauksen määrittely

If "Only synchronize features in area of interest" is selected, only features that are within the established extent area or the current map canvas (if not set) at packaging time will be copied to the offline editing working copy.

Note

This is available only for the "Cable Export" option.

Paketti QFieldiin

To package your project, click on Plugins > QFieldSync > Package for QField. Once the project is configured, proceed to package it into a folder. This folder will contain both the QGIS project file (.qgs) and the associated data.

Paketoi projekti QFieldiin

Even though QFieldSync doesn't display packaging options by default in the Toolbar panel, you can still access them through Plugins > QFieldSync > Preferences.

QFieldSync Preferences button

Simply activate the checkbox labeled "Show the packaging options in the toolbar."

QFieldSync Preferences

Copy the folder on your device. Open QField, open the project and start collecting data.

Also make sure to save the QGIS project using the regular Save As of QGIS as you'll have to re-open it later when you want to synchronize the changes.

During packaging your project you can select which subdirectories to be copied by checking the directories in Advanced -> Directories to be copied.

Select subdirectories

How to sync from/to iOS device without QFieldCloud

Use iTunes' File Sharing function to import into the QField root folder.

1. Open the iTunes app and click on the iPhone button near the top-left of the iTunes window.
2. Click on the File Sharing option in the left sidebar.
3. Select the app QField and click on Add File. This will open the file browser.
4. Valitse tiedosto.

Synkronointi QFieldistä

Kun haluat synkronoida keräämäsi tiedon, avaa projekti uudelleen QGISissä (se projekti, jonka tallensit tavallisella "Tallenna nimellä"-toiminnolla).

Copy the project folder from your device to your computer, and use the Synchronize from QField menu to synchronize your changes from the protable project to the main project.

Synchronize from QField

Make sure that you synchronize your data back only once. That means, if you go out again to collect more data, you should create a new QField package before to avoid sync problems later on (like e.g. duplicates).