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Bug

MapView::RelativeScale property returns null for ArcMapImage services.

Last Published: August 25, 2014 No Product Found
Bug ID Number NIM010497
SubmittedJuly 24, 2007
Last ModifiedJune 5, 2024
Applies toNo Product Found
Version found9.2
StatusDuplicate

Additional Information

NIM009856

Workaround

Code like this can be used to calculate the current relative scale of the map: private double getMapScale() { int dpi = 96; //number of pixels per inch; default is 96 if ((_map.GetFunctionality(0).GetType()) == typeof(ESRI.ArcGIS.ADF.Web.DataSources.IMS.MapFunctionality)) { ESRI.ArcGIS.ADF.Web.DataSources.IMS.MapFunctionality funcMap = (ESRI.ArcGIS.ADF.Web.DataSources.IMS.MapFunctionality) _map.GetFunctionality(0); MapView viewMap = funcMap.MapView; dpi = viewMap.ImageDescriptor.Dpi; } int inchesPerDD = 4371840; //number of inches in one degree latitude (approx) double mapW = _map.Extent.Width; //width of the map in decimal degrees int imgW = (int) _map.Width.Value; //width of the map image in pixels double inchesMap = mapW * inchesPerDD; //width of the map in inches double inchesImg = imgW / dpi; //width of the map image in inches return (inchesMap / inchesImg); //number of ground inches per inch of the image }

Steps to Reproduce

Bug ID: NIM010497

Software:

  • No Product Found

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