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Brent<br>
So kind of you to respond. I am afraid "geometry tools" is not an
option on my Vector pull down menu or toolbar. Do I need a plug-in?<br>
I quite agree with you about the centrality of a proper relational
database underpinning the gis. It is getting from one to the other
that is giving me the headaches.<br>
Robert<br>
<br>
<div class="moz-cite-prefix">On 08/02/2016 7:01 PM, Brent Wood
wrote:<br>
</div>
<blockquote
cite="mid:675386342.751519.1454950901727.JavaMail.yahoo@mail.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff;
font-family:verdana, helvetica, sans-serif;font-size:16px">
<div dir="ltr" id="yui_3_16_0_1_1454438917798_905178">Hi Robert,</div>
<div dir="ltr"><br>
</div>
<div id="yui_3_16_0_1_1454438917798_905231" dir="ltr">You can
create a layer of points for each polygon using:Vector -
Geometry Tools - Polygon Centroids</div>
<div id="yui_3_16_0_1_1454438917798_905229"><br>
</div>
<div dir="ltr" id="yui_3_16_0_1_1454438917798_905198">if you
have a common field in this and the census data, you can then
join the two:</div>
<div id="yui_3_16_0_1_1454438917798_905360" dir="ltr">Layer -
Properties - Join</div>
<div id="yui_3_16_0_1_1454438917798_905362" dir="ltr"><br>
</div>
<div id="yui_3_16_0_1_1454438917798_905364" dir="ltr">But I
recommend the use of an underlying database tool to manage
your data, such as Postgis or Spatiallite, and join the data
there to be used in QGIS. A collection of files does not
provide the power of a database for managing data, even when
accessed by QGIS. <br>
</div>
<div id="yui_3_16_0_1_1454438917798_905177"
class="qtdSeparateBR">
<div id="yui_3_16_0_1_1454438917798_905378"><br>
</div>
<div id="yui_3_16_0_1_1454438917798_905379">Well managed data
is the foundation your analysis, model or GIS sits on...<br>
</div>
<div><br>
</div>
<div>Cheers<br>
</div>
<div><br>
</div>
Brent Wood<br>
</div>
<div style="display: block;"
id="yui_3_16_0_1_1454438917798_905454" class="yahoo_quoted">
<div id="yui_3_16_0_1_1454438917798_905453"
style="font-family: verdana, helvetica, sans-serif;
font-size: 16px;">
<div id="yui_3_16_0_1_1454438917798_905452"
style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size:
16px;">
<div id="yui_3_16_0_1_1454438917798_905451" dir="ltr"> <font
size="2" face="Arial">
<hr size="1"> <b><span style="font-weight:bold;">From:</span></b>
rsweeny <a class="moz-txt-link-rfc2396E" href="mailto:rsweeny@mun.ca"><rsweeny@mun.ca></a><br>
<b><span style="font-weight: bold;">To:</span></b>
<a class="moz-txt-link-abbreviated" href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a> <br>
<b><span style="font-weight: bold;">Sent:</span></b>
Tuesday, February 9, 2016 2:10 AM<br>
<b><span style="font-weight: bold;">Subject:</span></b>
[Qgis-user] adding points within polygons<br>
</font> </div>
<div id="yui_3_16_0_1_1454438917798_905456"
class="y_msg_container"><br>
Hi<br>
People's answers to Grant's question were so clear I'm
hoping that <br>
something similar might exist to facilitate my task. I
have 32k of <br>
polygons representing every lot in the city of Montreal
in 1903. I also <br>
have the 1901 census returns coded by household (95k of
them) to those <br>
lots. Is there a simple way to have Qgis place points
within each lot <br>
polygon for the corresponding households?<br>
Thanks in advance.<br>
Robert<br>
<br>
-- <br>
Robert C.H. Sweeny<br>
Professor of History<br>
Memorial University of Newfoundland<br>
St John's NL, A1C 5S7<br>
Canada<br>
709-864-8440, 709-864-2164 (fax)<br>
<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Robert C.H. Sweeny
Professor of History
Memorial University of Newfoundland
St John's NL, A1C 5S7
Canada
709-864-8440, 709-864-2164 (fax)</pre>
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