Hi Ravi,
Did you try Union By Attribute plugin in Tools menu ?
Michaël
RAVI KUMAR a écrit :
Hi,
OJ with Mapgentoolbox plugin returns this error for a data with
correct topology.
The polygons based on attribute have to be disolved and in ARC-GIS the
same dataset works well. The following error message result.
I can send the concerned shape file to a personal email id upon
communication.
Ravi Kumar
ERROR:
java.lang.ClassCastException: com.vividsolutions.jts.geom.MultiPolygon
at
mapgen.algorithms.polygons.PolygonSetMerger.mergeGeoms(PolygonSetMerger.java:61)
at
mapgen.algorithms.polygons.PolygonSetMerger.mergePolySetByType(PolygonSetMerger.java:194)
at
mapgen.ui.onselecteditems.MergeSelectedPolygonsPlugIn.run(MergeSelectedPolygonsPlugIn.java:223)
at
com.vividsolutions.jump.workbench.ui.task.TaskMonitorManager$TaskWrapper.run(TaskMonitorManager.java:149)
at java.lang.Thread.run(Unknown Source)
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