[Qgis-user] multitemporal coastlines analysis:operations with multilines vectors?

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Dear all,

I 'am working on coastline 's dynamic at different periods. For each period
and from satellite coverages i captured multilines shapefiles representing
the coastlines.

Now i would like evaluate & caracterize the spatio-temporal evolution.
According to you, is there a tool in qgis in order to "characterize" the
difference (meters) between  linear shapefiles? Maybe it's possible to
generate easy stats from the geographic coordinates points constituting
multilines ?  

If you can throw light for me ?

With kind regards. 



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