[Marble-devel] Plotting custom position data on MarbleWidget (via PositionProviderPlugin?)

[Ian Holtham]

Hello. I would like to be able to plot a track of position data (from a
custom GPS data source) onto a map displayed in MarbleWidget. Ideally I
would like the user to be able to hover over any point on the track and
get a display of the data (time, position, etc) at that point?

 

Could anyone let me know the best way to do this?

 

I have tried implementing my own PositionProviderPlugin and setting this
visible in the MarbleWidget:

 

Marble::MarbleModel* model = this->model();

model->positionTracking()->setPositionProviderPlugin( new
Marble::CustomPositionProvider() );

model->positionTracking()->setTrackVisible( true );

 

However when I run this, the widget only displays a small segment (say
30 degrees) of the map centred at the current position in the direction
given by the PositionProviderPlugin with the rest of the widget
remaining undrawn.

 

I am using a QT only build of the MarbleWidget (version 1.2) build on
Windows using Visual Studio 2010

 

Any assistance would be gratefully appreciated.

 

Ian Holtham

Software Engineer

 

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