topic Geometric networks, weights, and Find Connected tracing in ArcGIS Network Analyst Questions https://community.esri.com/t5/arcgis-network-analyst-questions/geometric-networks-weights-and-find-connected/m-p/586117#M5634 <HTML><HEAD></HEAD><BODY><P>I have created a geometric network against a dataset of gas features, and am looking to implement something akin to a valve isolation trace (valves are junctions in the data model).&nbsp; To accomplish this, I created 1 type of weight in the geometric network definition, and called it ValveIsolation, with a type of Integer.&nbsp; I associated this weight with only 1 feature/field...the valve ID field.&nbsp; I know that all valve ID values are 7 and above, and from my readings on weights, I am assuming that any junction feature that is not associated with this particular ValveIsolation weight definition would return a value of 0 if asked for that weight during tracing.&nbsp; With that assumption, my thought was that I could accomplish the valve isolation trace within ArcMap using the Utility Network Analyst toolbar by placing a Junction Flag on any junction other than a valve and then, in the Weight Filter option for the trace, setting the Junction Weight to ValveIsolation and setting the weight filter simply to 0 (if all junctions other than valves return 0 for this weight, then the trace should go through all junctions but stop at valves).&nbsp; However, this is not the behaviour that I am seeing.&nbsp; When I attempt to run this Find Connected trace, I get no results.&nbsp; If, in the Weight Filter options, I toggle 'Not', the Find Connected trace does go out a bit...but I do not understand why.&nbsp; It does not get to any valves...it stops before them...and it is not stopping at features for which the Enabled flag is False.</P><P></P><P>Is my understanding of weights and their use in Find Connected traces incorrect?&nbsp; If so, what is it that I am misunderstanding, and how should I be configuring weights to properly accomplish what I've described above?</P><P></P><P>Thanks for any assistance.</P></BODY></HTML> Thu, 24 Mar 2016 16:50:38 GMT Anonymous User 2016-03-24T16:50:38Z Geometric networks, weights, and Find Connected tracing https://community.esri.com/t5/arcgis-network-analyst-questions/geometric-networks-weights-and-find-connected/m-p/586117#M5634 <HTML><HEAD></HEAD><BODY><P>I have created a geometric network against a dataset of gas features, and am looking to implement something akin to a valve isolation trace (valves are junctions in the data model).&nbsp; To accomplish this, I created 1 type of weight in the geometric network definition, and called it ValveIsolation, with a type of Integer.&nbsp; I associated this weight with only 1 feature/field...the valve ID field.&nbsp; I know that all valve ID values are 7 and above, and from my readings on weights, I am assuming that any junction feature that is not associated with this particular ValveIsolation weight definition would return a value of 0 if asked for that weight during tracing.&nbsp; With that assumption, my thought was that I could accomplish the valve isolation trace within ArcMap using the Utility Network Analyst toolbar by placing a Junction Flag on any junction other than a valve and then, in the Weight Filter option for the trace, setting the Junction Weight to ValveIsolation and setting the weight filter simply to 0 (if all junctions other than valves return 0 for this weight, then the trace should go through all junctions but stop at valves).&nbsp; However, this is not the behaviour that I am seeing.&nbsp; When I attempt to run this Find Connected trace, I get no results.&nbsp; If, in the Weight Filter options, I toggle 'Not', the Find Connected trace does go out a bit...but I do not understand why.&nbsp; It does not get to any valves...it stops before them...and it is not stopping at features for which the Enabled flag is False.</P><P></P><P>Is my understanding of weights and their use in Find Connected traces incorrect?&nbsp; If so, what is it that I am misunderstanding, and how should I be configuring weights to properly accomplish what I've described above?</P><P></P><P>Thanks for any assistance.</P></BODY></HTML> Thu, 24 Mar 2016 16:50:38 GMT https://community.esri.com/t5/arcgis-network-analyst-questions/geometric-networks-weights-and-find-connected/m-p/586117#M5634 Anonymous User 2016-03-24T16:50:38Z