[Qgis-user] contours and symbology

[Bernd Vogelgesang]

In case someone wants to google for the " % " later: it's called modulo
operator (damn, took me half an hour to remember that)


On 03.03.21 19:20, Sebastian Gutwein wrote:
> Sorry typo: "ELEV" :The attribute field that contains your elevation
>
> On Wed, Mar 3, 2021 at 1:19 PM 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
>>>
>>> --
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>>>
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