topic Accessing a layer's minimum scale by ArcObjects - numerical problem!? in ArcObjects SDK Questions https://community.esri.com/t5/arcobjects-sdk-questions/accessing-a-layer-s-minimum-scale-by-arcobjects/m-p/640702#M17237 <HTML><HEAD></HEAD><BODY><SPAN>Dear all,</SPAN><BR /><BR /><SPAN>I use ArcMap 10.0 SP 5. I have a MXD file that contains a layer. In the layer properties within ArcMap I set the visible scale range for the layer, e.g. a minimum scale of 1:501.</SPAN><BR /><BR /><SPAN>However, when I access the ILayer.MinimumScale using ArcObjects, the return value is 501.4999.</SPAN><BR /><BR /><SPAN>As far as I know, ArcGIS stores the representative scale fraction, which should be 1/501 = 0,001996008.</SPAN><BR /><SPAN>For 501.499 that fraction 1/501.499 would be 0,001994018.</SPAN><BR /><SPAN>I can't figure out what is the reason for these small differences.</SPAN><BR /><SPAN>Is it any truncation or rounding problem? I am using UTM projection, does the UTM scale factor influence here?</SPAN><BR /><SPAN>Has anybody experienced the same phenomenon?</SPAN><BR /><SPAN>Thank you very much for your answers in advance!</SPAN><BR /><SPAN>With best regards,</SPAN><BR /><SPAN>Johannes</SPAN></BODY></HTML> Wed, 30 Apr 2014 13:11:02 GMT johannesuhl 2014-04-30T13:11:02Z Accessing a layer's minimum scale by ArcObjects - numerical problem!? https://community.esri.com/t5/arcobjects-sdk-questions/accessing-a-layer-s-minimum-scale-by-arcobjects/m-p/640702#M17237 <HTML><HEAD></HEAD><BODY><SPAN>Dear all,</SPAN><BR /><BR /><SPAN>I use ArcMap 10.0 SP 5. I have a MXD file that contains a layer. In the layer properties within ArcMap I set the visible scale range for the layer, e.g. a minimum scale of 1:501.</SPAN><BR /><BR /><SPAN>However, when I access the ILayer.MinimumScale using ArcObjects, the return value is 501.4999.</SPAN><BR /><BR /><SPAN>As far as I know, ArcGIS stores the representative scale fraction, which should be 1/501 = 0,001996008.</SPAN><BR /><SPAN>For 501.499 that fraction 1/501.499 would be 0,001994018.</SPAN><BR /><SPAN>I can't figure out what is the reason for these small differences.</SPAN><BR /><SPAN>Is it any truncation or rounding problem? I am using UTM projection, does the UTM scale factor influence here?</SPAN><BR /><SPAN>Has anybody experienced the same phenomenon?</SPAN><BR /><SPAN>Thank you very much for your answers in advance!</SPAN><BR /><SPAN>With best regards,</SPAN><BR /><SPAN>Johannes</SPAN></BODY></HTML> Wed, 30 Apr 2014 13:11:02 GMT https://community.esri.com/t5/arcobjects-sdk-questions/accessing-a-layer-s-minimum-scale-by-arcobjects/m-p/640702#M17237 johannesuhl 2014-04-30T13:11:02Z