[Users] Metadata (data model)

[Sophie GRAS]

Hi everyone, 


I am wondering if it is possible to generate a grid from Geosjson data when we don't know the model of the file we are going to get. 
I know that in ExtJS there's this notion of metadata, is it working with geoext ? 
If yes, could anyone give me an example please ? 


Thanks ! 


Regards 


Sophie 
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