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Bogue

MapView::RelativeScale property returns null for ArcMapImage services.

Dernière publication: August 25, 2014 No Product Found
Numéro d’ID de bogue NIM010497
EnvoiJuly 24, 2007
Dernière modificationJune 5, 2024
S’applique àNo Product Found
Version trouvée9.2
StatutDuplicate

Informations supplémentaires

NIM009856

Solution de contournement

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 }

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ID de bogue: NIM010497

Logiciel:

  • No Product Found

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