[Qgis-user] geotiff to polygons

[Alexandre Neto]

Hi,

Do a reclassification on the Raster side, then convert to vector using the
Polygonize tool.

Hope it helps,

Alex Neto

Colm O'Neill <mail at colm.be> escreveu no dia quinta, 1/03/2018 às 18:06:

> Hi all,
>
> I'm wondering if this is a possiblity or if I'm off my mark:
>
> I'm working from a geotiff (that contains NO² levels — pollution indexes)
> that covers all of Belgium. From the geotiff, I performed a clipping, and a
> contour extraction. This is great and let me perform my spacial queries and
> data joins. I think:
>
> These contours are just that, contours, lines. Is there any way of filling
> these zones in? I would need this for non buffered querying + visualisation
> of my end webmap, to show the levels of pollution according to the geotiff.
>
> I'm looking at all of the vector geometry processing tools, but none of
> them seem to let me fill in the shapes that the contours extraction
> created. I'm sure I'm missing something, I've not been a qgis user for very
> long.
>
> Thanks in avance!
>
> All the best,
>
> Colm.
> --
>
> Colm O'Neill | BE +32478479350 <+32%20478%2047%2093%2050> | NL
> +31685263286 <+31%206%2085263286> | mail at colm.be
> colm.be | osp.kitchen
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-- 
Alexandre Neto
---------------------
@AlexNetoGeo
http://sigsemgrilhetas.wordpress.com
http://gisunchained.wordpress.com
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