[Qgis-user] question about statistical analysis and histograms

chris hermansen clhermansen at gmail.com
Sat Jan 2 08:19:15 PST 2021

Azzurra and list,

On Sat, Jan 2, 2021, 08:07 Azzurra Lentini <azzurralentini at gmail.com> wrote:

> Hi to all,
> I am using Qgis 3.16.1.
> I have a shape file of polygons of different zones classified by type of
> vegetation (so each polygon has different type of vegetation and these
> polygons have different surface). Each type of vegetation has a code
> (string type: letters and numbers),  so the field of type vegetation has
> data type string (text).
> I need to understand which kind of vegetation is more frequent (which type
> of vegetation occupies a greater areal extension) and I would like to do a
> histogram  that shows the result.

I think you want the Vector Layer Histogram tool for this.  I haven't used
it myself but from what I read it should do the job. I imagine you'll need
to add your area to the DBF.


An alternative is to add the area to the DBF and import the DBF into your
favourite spreadsheet program.  This would give you access to other
statistical tools.
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