[Qgis-user] calculation of meters of a layer

[Nicolas Cadieux]

Hi,
I am not sure if you want to measure distances (length) or and area.  In either case, you can use the measuring tool found in the tool bar.  You may need to activate this particular tool in the GUI.  The other option is to use the actuelle lines that you have and extract the length of the line using an expression.  

https://docs.qgis.org/3.16/en/docs/user_manual/working_with_vector/index.html

Look for « expressions » on this page.  If you want to measure an area, you can convert the lines you select into a polygon and use a expressing to extract the area of the polygon.  Google « Line to polygon and QGIS » to find what you need.

Good luck!

Nicolas Cadieux
https://gitlab.com/njacadieux

> Le 4 janv. 2021 à 06:03, Raffaele Ceretto <cerettoraffaele at gmail.com> a écrit :
> 
> 
> Good morning,
> 
> I was looking for a solution that would allow me to calculate the meters of a line within 4 points.
> Let me explain: I have several cities on which there are lines drawn on the roads.
> I would like to have a quick tool that when I go to delineate an area by framing the city, for example, I am immediately given back how many meters of the layer are enclosed
> 
> Is it possible to do such a thing?
> 
> Regards
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