<div>It's not temporally critical. I have ArcGIS and can (have) done it there; this is more a learning exercise as to what QGIS can do and how to do analysis with it. Spatially joining data like this is something I seem to do quite often so I was surprised not to find a universal tool.</div>
<div>Cheers,</div><div>Jonathan</div><div><br></div>
<br><br><div class="gmail_quote">On 8 August 2013 13:34, Randal Hale <span dir="ltr"><<a href="mailto:rjhale@northrivergeographic.com" target="_blank">rjhale@northrivergeographic.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Let me get to a good stopping point
this morning and I'll test something out. I think I might be able
to say yes to the tool. I think. <br><div class="im">
<br>
<br>
<pre cols="72">-----------------
Randal Hale, GISP
North River Geographic Systems, Inc
<a href="http://www.northrivergeographic.com" target="_blank">http://www.northrivergeographic.com</a>
<a href="tel:423.653.3611" value="+14236533611" target="_blank">423.653.3611</a> <a href="mailto:rjhale@northrivergeographic.com" target="_blank">rjhale@northrivergeographic.com</a>
<a href="mailto:rjhale@northrivergeographic.com" target="_blank"><mailto:rjhale@northrivergeographic.com></a>
twitter:rjhale
<a href="http://about.me/rjhale" target="_blank">http://about.me/rjhale</a>
</pre></div><div><div class="h5">
On 08/08/2013 08:20 AM, Jonathan Moules wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">Hi Randal,
<div>I had noticed the polygons to points converter, but wanted to
do it "properly" - i.e. with a polygons in polygons comparison.</div>
<div><br>
</div>
<div>Your method will likely work but adds two extra steps
(conversion to points and then from points back to polygons).
Does QGIS not have a tool for this then?</div>
<div><br>
</div>
<div>Thanks!</div>
<div><br>
</div>
<div>Jonathan<br>
<br>
<br>
<div class="gmail_quote">On 8 August 2013 13:12, Randal Hale <span dir="ltr"><<a href="mailto:rjhale@northrivergeographic.com" target="_blank">rjhale@northrivergeographic.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Here's how I would do it: You have Two polygon layers
and you need to count the number of polygons in layer 1
that are contained in the polygons in layer 2 <br>
<br>
1. Convert the polygons in 1 to points: Vector ->
geometry -> polygon centroids <br>
2. then use -> vector -> analysis tools ->
points in polygon. Count the number of points contained
by polygons in layer 2. <br>
<br>
Hope that helps or at least creates an idea. <br>
Randy<br>
<pre cols="72">-----------------
Randal Hale, GISP
North River Geographic Systems, Inc
<a href="http://www.northrivergeographic.com" target="_blank">http://www.northrivergeographic.com</a>
<a href="tel:423.653.3611" value="+14236533611" target="_blank">423.653.3611</a> <a href="mailto:rjhale@northrivergeographic.com" target="_blank">rjhale@northrivergeographic.com</a>
<a href="mailto:rjhale@northrivergeographic.com" target="_blank"><mailto:rjhale@northrivergeographic.com></a>
twitter:rjhale
<a href="http://about.me/rjhale" target="_blank">http://about.me/rjhale</a>
</pre>
<div>
<div> On 08/08/2013 07:36 AM, Jonathan
Moules wrote:<br>
</div>
</div>
</div>
<blockquote type="cite">
<div>
<div>Hi List,
<div> I have two layers of polygons. I want to do
some analysis between them, basically doing a
spatial join, counting how many of one polygon
layer there are intersecting with each polygon in
the other layer. </div>
<div>ArcGIS does this easily with the "Spatial Join"
tool (ArcToolbox version). How can I do this in
QGIS?</div>
<div><br>
</div>
<div>I know there is Vector -> Data Manage Tools
-> Join attributes by location, but that only
acts as a basic join and doesn't allow for
counting of the number of joins.</div>
<div><br>
</div>
<div>Sextante has a large collection of tools, but
none of them seem to have any help so I don't know
what any of them do. (And none of them seem
applicable anyway).</div>
<div><br>
</div>
<div>Suggestions welcome, Cheers,</div>
<div>Jonathan</div>
<br>
</div>
</div>
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