Warnings summary

MapCreator does automatic sanity checks for the recorded data. If you see any warnings pop-ups during mapping, please treat them with care– they are designed to teach you to record better paths and to inform you about:

• Device capabilities : e.g. low Wifi scanning frequency (see example image below)
• Mapping style errors : e.g. inaccurate check-ins
• Floor plan aligment errors : e.g. wrong scale or wrong floor plan rotation on world map 

Example warnings

Step detection problem

Note that this is a fatal warning (red) and you cannot store the path if you get it. Please follow the fix below to avoid it.

Cause: Floor plan is misaligned as too large or too small on the world map in app.indooratlas.com.

Fix: Make sure the size of the floor plan on the worldmap matches real world size. Go to app.indooratlas.com to check the floor plan aligment.

Cause: Walking very softly on the ball of the foot.

Fix: Try adjusting your walking style a bit and make sure you are wearing shoes.

Symptoms: None because the path cannot be stored.

Low WiFi scanning frequency

Cause: Note that the WiFi scan frequency varies across phone models, so to save time in professional mapping you should use a phone that has decent scanning frequency. For more info, see qualifying a mapping device.

Fix:

• Test if your Android phone qualifies as a mapping device.
• Check that Location feature is enabled on your Android settings
• WiFi-scanning feature is enabled in the settings

Symptoms: This warning likely leads to inaccurate positioning or the positioning not able to start at all, because the venue cannot be automatically found based on the radio information.

Wrong check-ins

Cause: Checked-in by mistake to a wrong waypoint or check-in at a wrong time (too early, too late).

Fix: Take care to check-in at the exact right location and at the right time.

Cause: Waypoints are placed inaccurately or to places that cannot be easily recognized in the physical space.

Fix: Remove waypoints that are not in easily recognizable locations and place new waypoints as instructed in Adding Waypoints.

Symptoms: If such a path is stored, the resulting map quality will be low and thus likely leads to red mapping analytics and inaccurate positioning.

Wrong compass heading

Cause: You walked the path to the incorrect i.e. opposite direction.

Fix: Make sure you know your whereabouts on the floor plan and have the floor plan correctly oriented.

Cause: The device was not pointing to your walking direction.

Fix: Keep the phone’s screen pointing towards the ceiling and the tip of the phone towards your walking direction. The tutorial video makes it clear how to hold the device.

Cause: The north of the floor plan is not correctly pointing towards the north in app.indooratlas.com.

Fix: Go to app.indooratlas.com and fix the floor plan rotation.

Symptoms: If such a path is stored, the resulting map quality will be low and thus likely leads to red mapping analytics and inaccurate positioning.