last weekend i completed the survey of a cave with some parallel close pits connected through several "windows". the last survey joined the previous surveys at seven stations.
needless to say, i was not able to tell therion how to break the centerline for the extended elevation. Eventually i removed a few "equates" (the loops closed quite well anyways) extended elevation requires a spanning tree of the centerline graph. "extend" is meant to tell therion how to break loops "removing" edges/legs. I suspect that this semantics of "extend stop" is not sufficient because if the user moves the data around (which is acceptable because in therion data can be reordered) the result could be different. I believe that we need a way the user tell therion how to construct the spanning tree without ambiguities. The only solution i can see is telling which edge to remove. The drawback is that each station appears only once (at one node) in the tree, and there cannot be two stations "7" as in Tarquin's problem. back to the problem i experienced: what about an option to "equate" to tell therion that it must not be used for the extended elevation ? marco _______________________________________________ Therion mailing list [email protected] https://mailman.speleo.sk/listinfo/therion
