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Unable to add more than 20 zoom levels

#1

I need to be able to zoom in within a few feet. To do this, I thought I could just add custom zoom levels. However, I’m unable to zoom in any further than the original 20 zoom levels no matter how many I add to the customzoomlevel collection. Code below:

var partitionedZoomLevelSet = new ZoomLevelSet(); //make custom zoom levels to zoom in further than default
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[0].Scale));
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[1].Scale));
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[2].Scale)); 
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[3].Scale)); 
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[4].Scale)); 
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[5].Scale));  
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[6].Scale));  
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[7].Scale));  
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[8].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[9].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[10].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[11].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[12].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[13].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[14].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[15].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[16].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[17].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[18].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[19].Scale));   
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[19].Scale / 2));
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[19].Scale / 4));
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[19].Scale / 6));
partitionedZoomLevelSet.CustomZoomLevels.Add(new ZoomLevel(GlobalObjects.Instance.OnyxMap.ZoomLevelSet.GetZoomLevels()[19].Scale / 8));

MyMap.ZoomLevelSet = partitionedZoomLevelSet;

The map is in decimal degrees, unprojected.

#2

Hi Dan,

I build a test project, and it looks the scale can be zoomed in deeper.

And I think if you set map.MinimumScale it should zoom better.

As below is the test project, please view it.

9536.zip (101.6 KB)

Regards,

Ethan

#3

Thanks, that seemed to work. One question, do I have set each layer’s zoomlevelset to the custom levels or does it do it automatically?

For instance, I have a lot of layers set up like this:

inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.CustomStyles.Add(FontValueStyle);
inMemoryFeatureLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;

Will the above ApplyUntilZoomLevel work for the custom levels as well?

#4

Hi Dan,

Yes you’re right, the ApplyUntilZoomLevel works for custom style also.

Regards,

Ethan