[Qgis-user] contours and symbology

[Azzurra Lentini]

Hi Sebastian great, it works, thank you.


On Wed, 3 Mar 2021 at 19:19, Sebastian Gutwein <bas at rdgland.com> wrote:

> I use rule based styling with this expression for my 100m contour filter
> rule:
> "ELEV" % 100 = 0
> And then another rule that has the Else selected.
> The formula is:
> "ELEV" :The attribute field that contains your label
> % : The remainder from division
> 100 : the divider
> = 0 : the remainder should equal zero.
> This filters all the 100m contours.
>
> On Wed, Mar 3, 2021 at 1:01 PM Azzurra Lentini <azzurralentini at gmail.com>
> wrote:
>
>> 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
>> ++++++++++++++++++++++++++
>> Italy Mobile Tel.: **(39) 338 24 40 676
>> ++++++++++++++++++++++++++
>> SKYPE azzurrahydro
>> ++++++++++++++++++++++++++
>>
>> *azzurralentini at gmail.com <azzurralentini at gmail.com>*
>>
>> *azzurra.lentini at uniroma3.it <azzurra.lentini at uniroma3.it> *
>> ++++++++++++++++++++++++++
>> *Par respect pour l'environnement,*
>>
>> *n'imprimez ce mail qu'en cas d'absolue nécessité*
>>
>>
>>
>>
>>
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>

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

*azzurralentini at gmail.com <azzurralentini at gmail.com>*

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

*n'imprimez ce mail qu'en cas d'absolue nécessité*
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