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PADOC Application (en)

Introduction to PADOC

PADOC stands for Plate-forme d’Acquisition de Données d’Observation de Cétacés (that’s for French people). Données is for data, you can easily translate the rest!

PADOC is an Android application. While at sea studying cetacean behavior, it allows to record different data types such as group structure, cetacean movements and positions (speed, course), and surface events (jumps, blows, social behavior, etc.). Time and position are automatically recorded with any entered data, and a CSV file is generated so that the data can be easily processed later.


PADOC is available on Play Store.

System requirements

PADOC runs on virtually any decent Android device (tablet or smartphone).

Minimum requirements:

  • Screen size: 4.7 inches
  • Android version: Jelly Bean (Version 4.1.1, API 16)

Recommended requirements:

  • Screen size: 8 inches
  • GPS
  • compass

Instructions for use

Launch the app by tapping the PADOC icon:

From the home screen, you can:

  • change the language of the application
  • check the version
  • start an observation (don’t forget to turn the GPS on)

Tap the “Start an observation” button in the “New observation” dialog box, select the species (select first the “Area” to find the species more easily).

Tap the “Validate” button to start the observation.

You are now in the “events” screen, ready to record events.

In the top right corner, the GPS icon tells you if the GPS is ready (green) or still looking for its position (flashing red). If green, you can click on it to see your GPS position.

The first line of switches lets you define on which individuals the events will be applied. You can selected several individuals or the whole group.

All the buttons in the middle are the events you can record. Buttons with an arrow in the bottom right corner allow you to enter more details if you long press on them.

At the bottom of the screen, the list of already recorded events. A long press on one item proposes you to delete it.

To change the estimated group size or the group structure, swipe to the right (or tap “Structure” in the tab bar).

Just tap “Confirm” to save your changes.

You can also give more details on the composition of the group. Don’t forget to “Validate” your changes to save them.

To enter data about speed and position of the cetaceans, swipe to the left (or tap “movement” in the tab bar).

To enter the heading or the bearing, you have 3 possibilities:

  • 1 Click on one of the arrows in the corresponding compass
  • 2 Tap the center of the compass and enter a value with the keyboard
  • 3 Point the device to the wanted direction and tap the button on the top of the compass

You can also enter the distance of the cetaceans and their speed range (tap the button with the correct speed range).

And don’t forget to validate the entered data.

When the observation ends, tap the “back” button of your Android device and validate.

PADOC is ready for another observation.

Analysis of CSV files

All CSV files are stored in “Documents/PADOC” folder. The files can easily be open with spreadsheet tools (like OpenOffice or Excel).

The first line of the files contains a header describing each column.

Last but not least !

Play a little bit with the app and the CSV files before going to sea. You will better understand how it works, the recording of data will be smoother and the analysis easier.


Thanks for flying PADOC

Laurent Delrocq and Groupe de Recherche sur les Cétacés development team.


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