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Suggested Presentation Topic
Methods of Simplifying Hydrographic Networks
Many of us take NHD or NHDPlus and essentially dumb it down to suit our application needs, usually eliminating unwanted features, merging others, and ensuring that certain features of interest are maintained. We hope to have a 1-hour webex before the end of October during which several of us give 10-minute presentations on how they have approached this. We hope to maintain time to have more detailed discussions. At the moment, a few speakers are interested. Please add your name here if you would are not on the list but would also like to present and we'll try to work it out.
We should probably build a list of links to code repositories for different algorithms.
Find identities of features upstream of arbitrary starting points
Distance upstream for a given node (or point) from the "mouth"
Maximum distance downstream to a node from the top of the network
Label of streams according to the relationship to the longest path on the network. (Kind of like a reverse stream order, with 1 being the "main stem", 2 being direct tributaries to the main stem, etc.
Label with the Pfafstetter subbasin numbering system adopted by Kris Verdin