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goldenlimit - Major in MIS and minor in GIS, graduated from University of Alabama. GIS is not a simply tool but a way of exploring the unknow
赞同来自: 张宝才 、从何说起
张宝才 - ArcGIS fans
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goldenlimit - Major in MIS and minor in GIS, graduated from University of Alabama. GIS is not a simply tool but a way of exploring the unknow
赞同来自: 张宝才 、从何说起
1. 指定你要query的URL:
//set up query task against layer, specify the delegate
self.queryTask = [AGSQueryTask queryTaskWithURL:[NSURL URLWithString:countiesLayerURL]];
self.queryTask.delegate = self;
2.把你画好的geometry指向到query.geometry,然后把spatialRelationship关系定义好:
self.query = [AGSQuery query];
self.query.outFields = [NSArray arrayWithObjects:@"*", nil];
self.query.returnGeometry = YES;
self.query.geometry = mPolygon;
self.query.spatialRelationship = AGSSpatialRelationshipIntersects;
[self.queryTask executeWithQuery:self.query];
这个是AGSQuery.geometry的文档:
https://developers.arcgis.com/ios/10-2/api-reference/interface_a_g_s_query.html#a274481c5a65785c77d38e99ce73611ce
希望对你有所帮助
张宝才 - ArcGIS fans
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