[Qgis-user] contours and symbology

[Azzurra Lentini]

Hi to all,

I have extracted contours from a dtm raster 20 m resolution file and the
result is a vector file of contours with 20 m of interval between the
contours.

I would like to have two different symbols for these contours: for example
black colour and thickness 1 for the contours with interval of 100 m (0,
100, 200, 300 etc.) and grey colour and thickness 0.5 for the contours 20,
40, 60, 80, 120, 140 .. etc.).

What can I do?

Normally I create another contours file only for the contours equidistant
100 m and I put a different symbol for the 2 layers.

Do you know other ways without the creation of another file?
maybe rule-based symbology?


Thank you, Azzurra

-- 
Lecturer GIS University "Roma Tre"
Consultant Environmental Risk Prevention and Hydrogeology
AZZURRA LENTINI
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Italy Mobile Tel.: **(39) 338 24 40 676
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SKYPE azzurrahydro
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*azzurralentini at gmail.com <azzurralentini at gmail.com>*

*azzurra.lentini at uniroma3.it <azzurra.lentini at uniroma3.it> *
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*Par respect pour l'environnement,*

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