Define several maps, export them separately and use -map-image to place them in one export.
As continuatuon line you may modify user line strata https://therion.speleo.sk/wiki/metapost#line_symbols <https://therion.speleo.sk/wiki/metapost#line_symbols> Martin > 20. 12. 2019 v 10:00, Tarquin Wilton-Jones via Therion <[email protected]>: > > Hi all, > > With extended elevations, you might want to show only the most important > parts, like pitches, while showing long passages as a shorter distance > with a break symbol. Imagine a cave with an initial pitch, a long > passage, and a final pitch, where the extended elevation should > concentrate on the detail of the pitches only, and not have the long > passage wasting space. For a real example, see this rigging topo: > > https://cncc.org.uk/caving/topos/download-single.php?id=6 > > If the passage is horizontal, you could easily achieve this by setting > the legs of the long passage to "extend vertical", so that its stations > to not take up any horizontal length. You can then manually draw the gap > with some lines. > > However, if the long passage slopes downwards, this will make the two > parts of the passage break with a vertical gap between them. This makes > sense because it means that the extended elevation will show the > vertical range of the cave, which is great if that's what you are hoping > for. But in a rigging topo, it is less useful. There is no equivalent > that I can see to "extend equate 21 57", which would be an equate that > happens only during an extended elevation. Essentially, this is the > desired outcome though. > > For a real example, see this rigging topo - the breaks represent a > passage that has lost as much as 20 metres of altitude, which is > completely ignored: > > https://cncc.org.uk/caving/topos/download-single.php?id=61 > > One method I can think of - but it feels like a hack - is to draw the > upper pitch in one map, and the lower pitch in another map, then use map > offsets to pull the lower map into the desired position when rendering. > > Does anyone have a better solution to this? Can "extend hide" do > something useful or will that still keep any vertical (and horizontal) > offsets? > > Thanks for any advice. > > Tarquin > _______________________________________________ > Therion mailing list > [email protected] > https://mailman.speleo.sk/listinfo/therion
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