Hi @Ethan
I use a InMemoryFeatureLayer to show some point,These points have different sizes.I want to display the message when the mouse moves to the point. How can do that ?
i use this API to do Collection<Feature> dotNearestFeatures = dotLayer.QueryTools.GetFeaturesNearestTo(worldLoction, mapControl.MapUnit, 1, dotColumnNameLayer, 100000, DistanceUnit.Meter);
but the 100000 parameter is not determined, So the results are not accurate.
Regards.
ZhangMing
Hi Zhangming,
I think this sample is helpful for your requirement: https://github.com/ThinkGeo/DynamicMarkerOverlaySample-ForWpf
And please don’t set 100000, it’s too big for this function, I guess you just need query nearest points and pick them order by distance, so please reduce the value.
Regards,
Ethan
Hi Zhangming,
I am glad to hear that’s helpful.
Regards,
Ethan
Hi @Ethan
Thank you for your strong support.
i use this Api Collection nearestFeatures = mapLayer.FeatureSource.GetFeaturesNearestTo(worldLoction, mapControl.MapUnit, 1, columnNames, 1, DistanceUnit.Meter) to get ShapeFileFeatureLayer feature.
This API is invoked in mouse movement events, But sometimes get this error. The decimal degree longitude value you provided was out of range. How can I avoid this mistake?
Regards
ZhangMing
Hi ZhangMing,
For Decimal Degree, projection 4326, the longitude should between (-180, 180), the latitude should between (-90, 90).
Please double check your value.
Regards,
Ethan
Hi Zhangming,
Thanks for your update.
Any question please let us know.
Regards,
Ethan
