Problem with GPS shape and line modification in Enketo

fpageot · February 12, 2021, 5:51pm

Hi Everyone!

I’m having a little problem with the gps shape and line recording.
While I’m in the app, everything works fine but when I try to modify my answers on the web with Enketo, I have different kind of errors :

Sometimes much more point that I have really recorded
Sometimes I have to delete the first point in order to close the polygon.

Can you help me please?

stephanealoo · February 12, 2021, 6:31pm

Hi @fpageot

This is not right since it is the data you collect that should appear. Could you please verify by providing what you have when you are collecting and when you are editing.

Could you provide more explanation around which scenarios require this? As it is you indicated that “sometimes”. Does it mean that other times it works? Could identify any difference between the times it works and the times it does not work.

Stephane

fpageot · February 15, 2021, 1:57pm

Hi @stephanealoo
Thank you for your answer.

Here is an example where we have collected 25 points and 27 appears on enketo.

Unfornutately, we have not been able to identify the differences when it happens or not.

Thank you!
Fabien

Kal_Lam · February 15, 2021, 2:16pm

Sorry, could not still understand your issue. Could you kindly simplify it again so that we are able to help you out.

fpageot · February 15, 2021, 2:24pm

Hello @Kal_Lam,

The process is :

we collect gps data on the field (trace or shape) with odk collect
we transfer this data to Kobotoolbox
we check the data that has been loaded on kobotoolbox with Enketo

The problem is (for this example) :

we have collected 25 points (24 + the last point that is the first so that the polygon is closed)
In enketo we have 27 points instead of 25 and we don’t understand why.
because of this issue we cannot close the polygon unless we manually delete the points

Fabien

Kal_Lam · February 15, 2021, 2:28pm

As a quick workaround could you kindly download your data and check them out to see if the variations are see in the downloads too?

fpageot · February 15, 2021, 2:33pm

In the downloads, we have 25 points

Kal_Lam · February 15, 2021, 2:37pm

So the points while collecting data and the points while downloading matches (i.e. 25 points). So the issue is when viewing it through Enketo (where you see 27 points)?

fpageot · February 15, 2021, 2:44pm

Yes, exactly !

Kal_Lam · February 15, 2021, 2:46pm

Could you try this for another entry (case) and see if the same happens again?

fpageot · February 15, 2021, 2:59pm

We have recorded more than 500 gps tracks and everytime (we have tried for more than 10 tracks) we open them in Enketo, we have this problem.

Kal_Lam · February 15, 2021, 3:00pm

So you mean, whenever there is more than 10 points the issue is on?

fpageot · February 15, 2021, 3:02pm

No I meant that we have tried to open more than 10 of these 500 tracks and for all of them we had this problem

Kal_Lam · February 15, 2021, 3:03pm

OK, will try to replicate your issue at my end.

fpageot · February 15, 2021, 3:04pm

Thank you a lot @Kal_Lam

Kal_Lam · February 17, 2021, 7:52am

Have you uploaded and viewed your data (geoshape) to any map application? Maybe someone export with mapping from the community would be able to help you out with your query.

fpageot · February 17, 2021, 3:05pm

I have tried to upload and view the data on QGIS and on Google Earth and everything works fine.

Enketo was a great way for people to easily modify the geoshape and other data before downloading them.

Kal_Lam · February 17, 2021, 3:07pm

Thank you for confirming that it worked smoothly without any issue.

fpageot · February 17, 2021, 3:20pm

You’re welcome !
I don’t know if my answer was clear, but that would be amazing if we can still find a solution with Enketo.

martijnr · February 18, 2021, 6:19pm

Curious to hear if you can reproduce it with e.g. just 3 points @Kal_Lam.

@fpageot, could you please post a single geoshape or geopoint value that has this problem (as text, not a screenshot)? Thanks in advance!