Hey, thank you for your answer. I will definitely try that out, Although I am not yet convinced that automatic hachure generation is doable in QGIS. I've seen more possibilites for doing this in a Autocad extension/ plugin (Quvadis).
Frank Am 2014-04-21 02:58, schrieb maning sambale: > Another approach would be from a DEM, generate slope and aspect. Add > the values to a point vector layer and follow Imhof's rules. > > I made a similar experiment many moons ago. Check the last two photos > in this post: > http://epsg4253.wordpress.com/2012/05/14/alternatives-to-relief-shading/ > > "The arrows depicts the direction of the surface (aspect) while the > line thickness depicts the steepness of the gradient (slope)." > > On Fri, Apr 18, 2014 at 3:36 PM, Frank Broniewski <[email protected]> wrote: >> Hi, >> >> I'd like to construct manually some hachures in order to show the >> terrain form, like in ye olde maps >> (http://en.wikipedia.org/wiki/Hachure_map) >> >> I am working with contours that I have available. Using the snapping >> options I can already draw lines between two contour lines just fine, >> but a hachure line is usually drawn in the direction of the steepest >> slope. So it would be useful to have a length indicator, just like with >> the measurement tool, when digitizing lines. Because the shortest >> distance between two points would represent the steepest slope and that >> is what I want to know. >> >> So how can I get the current line length while digitizing? Is there some >> plugin? I am also not afraid of using Python to achieve this, but I've >> never done any QGIS modding so far ... >> >> Many thanks, >> >> Frank >> >> >> -- >> Frank BRONIEWSKI >> >> METRICO s.à r.l. >> géomètres >> technologies d'information géographique >> rue des Romains 36 >> L-5433 NIEDERDONVEN >> >> tél.: +352 26 74 94 - 28 >> fax.: +352 26 74 94 99 >> http://www.metrico.lu >> _______________________________________________ >> Qgis-user mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/qgis-user > > > -- Frank BRONIEWSKI METRICO s.à r.l. géomètres technologies d'information géographique rue des Romains 36 L-5433 NIEDERDONVEN tél.: +352 26 74 94 - 28 fax.: +352 26 74 94 99 http://www.metrico.lu _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
