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 <[email protected]> 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 <[email protected]>
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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Consultant Environmental Risk Prevention and Hydrogeology
AZZURRA LENTINI
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