[Qgis-user] Hachure construction

[venerio giuseppe anardu]

I don't think this task can be accomplished automatically, but if it could be possible it will be awesome!
Anyway, I've found this article:
http://mike.teczno.com/notes/hachures.html
Greetings
Il Mercoledì 23 Aprile 2014 14:43, Frank Broniewski <brfr at metrico.lu> ha scritto:
 
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 <brfr at metrico.lu> 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
>> Qgis-user at lists.osgeo.org
>> 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
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