[Qgis-user] adding points within polygons
Brent Wood
pcreso at yahoo.com
Mon Feb 8 09:01:41 PST 2016
Hi Robert,
You can create a layer of points for each polygon using:Vector - Geometry Tools - Polygon Centroids
if you have a common field in this and the census data, you can then join the two:Layer - Properties - Join
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.
Well managed data is the foundation your analysis, model or GIS sits on...
Cheers
Brent Wood
From: rsweeny <rsweeny at mun.ca>
To: qgis-user at lists.osgeo.org
Sent: Tuesday, February 9, 2016 2:10 AM
Subject: [Qgis-user] adding points within polygons
Hi
People's answers to Grant's question were so clear I'm hoping that
something similar might exist to facilitate my task. I have 32k of
polygons representing every lot in the city of Montreal in 1903. I also
have the 1901 census returns coded by household (95k of them) to those
lots. Is there a simple way to have Qgis place points within each lot
polygon for the corresponding households?
Thanks in advance.
Robert
--
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)
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