[Qgis-user] Finding relationships between different types and subjects of shape files

[Ujaval Gandhi]

Hi Dave,


The QGIS Processing Toolbox has several 'Join' tools. 'Join Attributes by
Location' will find the intersecting feature from another layer, 'Join
Attributes by Nearest' will find the nearest feature from another layer and so
on. Each of these tools have an option 'Selected Features only'. so if you want
to online find nearest feature of a particular zone type in a layer, first
select all the features (Select by Attribute) and then run the join tool of your
choice.




---
Ujaval Gandhi
Spatial Thoughts
www.spatialthoughts.com [http://www.spatialthoughts.com]




On Mon, Jun 15, 2026 at 9:51 AM chris hermansen via QGIS-User
<qgis-user at lists.osgeo.org> wrote:

> Dave and list,
> 
> 
> On Sun, Jun 14, 2026, 20:57 Dave Kabay via QGIS-User
> <qgis-user at lists.osgeo.org [qgis-user at lists.osgeo.org]> wrote:
> 
> 
> > Hi
> > 
> > Being moderately new to QGIS, I am  just seeing if there are Plugins that
> > can find relationships (e.g.  say inside, x meters away etc. )between
> > different types of shape files (e.g. point, line and polygon shape files)
> >  and different subject shape files e.g. say a particular class of
> > Observation( point shape files) ,say  rainfall isohyets, depth to ground
> > water lines (line shape files) and say soil types, depth to ground water
> > depth (polygon shape files. 
> > 
> >  
> > 
> > Any help would be appreciated.  An example of a particular question I want
> > to look at is Do a particular species of fungi occur in what soil type(e.g.
> > sandy 4 type)  in a particular zone of geology (Bigger shape file) or
> > 
> > How far from an observation (point) is from the boundary of 2 different
> > particular adjacent soil types(polygon shape files) in which the observation
> >  is in 1 of them
> 
> 
> 
> What you are trying to do is loosely termed "spatial analysis" and there are
> many tutorials on the topic available online.
> 
> 
> Operations like "intersection" and "overlap" relate to the kinds of queries
> you want to carry out. Sometimes creating buffers around spatial objects is a
> part of that process.
> 
> 
> You can start here:
> 
> 
>  https://qgis.org/resources/hub/ [https://qgis.org/resources/hub/]
> 
> 
> Or use your favourite search engine to explore things like "spatial analysis
> tutorials".
> 
> > 
> 
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