Using Mappt to Collect Data in the Field, Part 2 of 3

thematic mapping

This is part 2 in a 3-part series that offers a simple User Story that could form the basis of a workflow to be adopted by new or existing Mappt users.

If you haven’t already, we suggest reading part 1, “Preparation” here, which discussed preparing your tablets and datasets for work in the field.

In the Field

When performing your duties in the field, you will import your Project Datasets into Mappt to assist in locating assets and referring to job information.  As suggested in phase 1, project datasets should not be edited; instead, data captured in the field should be logged into smaller, job template datasets.

When commencing a job, a new template should be imported and updated as the job progresses.

A good job template will allow you to easily capture new data while providing the structure necessary to capture quality, error-free data.  For Shapefiles, this would mean that the job template contains a pre-defined set of attributes, guiding the user to enter relevant data into the correct places.

If your work is conducted in an Internet-connected area, you may consider hosting and distributing your datasets over Google Drive via a shared folder.  Doing this will allow your administrative teams to provide consistently accurate datasets to your team, without the need to redistribute datasets via email or other manual methods.

Custom offline imagery can be loaded to assist with navigation in combination with the tablet’s GPS hardware. If your imagery is high-quality and correctly geo-referenced, you can use the imagery to position features on the map with a high degree of accuracy. This is perfect for when the GPS hardware is not accurate enough.

Thematic Mapping (previously known as Classifications) can be applied to larger datasets to locate features with certain attributes.  For example, consider a dataset containing markers that represent assets to be inspected, with an INSPECTED YES/NO attribute, indicating whether the asset requires inspection.  Using Thematic Mapping, the markers could be styled green to highlight the markers to be inspected, providing an easy method to visually indicate work to be done.

thematic mapping

Completing the Job

Once data has been obtained and the job complete, any captured data layers can be exported to the local storage of the tablet before moving on to the next job.

In phase 3, we will outline some options for retrieving the recorded data from the tablet for re-integration back into the project.

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