Latest Contributions by Jens_Dalsgaard

For a meshed network subnetworks meet at open breaking units (as well as at the subnetwork controller). Typically having a subnetwork per transformer (for three winding transformers we would even have two subnetworks) very quickly an electric utility will end up having tens of thousands of subnetworks. Each of the subnetworks (Subnet Lines) generated will have a subnetwork name together with a few other attributes (https://pro.arcgis.com/en/pro-app/latest/help/data/utility-network/subnetline-feature-class.htm). Coloring Subnet Lines offers a quick overview of how the grid is fed and where tie breakers exist. Yet, coloring the many thousand subnet lines (coloring by subnetwork name, what else can I do)) we get this warning: Well, I have to click Yes to have some sort of useful coloring.  Besides likely not being nice to performance having coloring based on a very large number of unique values, we also quickly see the problem: Adjacent subnetworks (subnet lines) are assigned colors very alike (or perhaps the same). In the screen dump below, the green arrow indicates a place where adjacent subnetworks are assigned contrasting colors whereas at the red arrow two adjacent subnetworks are assigned the same color:    My propsal to Esri is, that when updating subnetworks, you also assign a coloring-number to each subnetwork (an extra attribute to be added). Not a color code (#3380ff) - just a number from 1 and up. Then I may choose whether 1 is represented by red, green, ... In a previous proof of concept, I showed that the entire low voltage grid (real world data for a low voltage grid feeding several hundred thousand customers) could be colored using less than 15 colors (it's years ago - I don't recall the exact number - it was less). As the utility network is persisted in a graph, without being an expert on these matters I believe such coloring-numbers could be easily generated using the so-called graph edge-coloring:  https://en.wikipedia.org/wiki/Edge_coloring  This way I could symbolize my subnet lines based on not thousands of subnetwork names but based on less than 15 coloring numbers.  And I would be sure that adjacent subnetworks would be assigned contrasting colors; It's quite a lot easier to define 15 contrasting colors than to do the same with thousands...   ... View more