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> <channel><title>Gary Pendergast &#187; GIS</title> <atom:link href="http://pento.net/tag/gis/feed/" rel="self" type="application/rss+xml" /><link>http://pento.net</link> <description>I&#039;m on the Internet</description> <lastBuildDate>Thu, 17 May 2012 04:24:17 +0000</lastBuildDate> <language>en</language> <sy:updatePeriod>hourly</sy:updatePeriod> <sy:updateFrequency>1</sy:updateFrequency> <generator>http://wordpress.org/?v=3.3.2</generator> <cloud
domain='pento.net' port='80' path='/?rsscloud=notify' registerProcedure='' protocol='http-post' /> <item><title>MySQL and Geospatial Data</title><link>http://pento.net/2009/05/18/mysql-and-geospatial-data/</link> <comments>http://pento.net/2009/05/18/mysql-and-geospatial-data/#comments</comments> <pubDate>Mon, 18 May 2009 01:08:12 +0000</pubDate> <dc:creator>Gary</dc:creator> <category><![CDATA[MySQL]]></category> <category><![CDATA[GIS]]></category> <guid
isPermaLink="false">http://pento.net/?p=242</guid> <description><![CDATA[MySQL has had basic support for Geospatial Data since 4.1, but has lacked some of the features of the OpenGIS specifications since then. The good news is, this is rapidly changing. Our own Holyfoot has been hammering away at WorkLog #1327, to provide precise functions for our GIS support. Even better, it&#8217;s fast. How fast? [...]]]></description> <content:encoded><![CDATA[<p>MySQL has had basic support for Geospatial Data since 4.1, but has lacked some of the features of the <a
href="http://www.opengeospatial.org/">OpenGIS</a> specifications since then. The good news is, this is rapidly changing. Our own Holyfoot has been hammering away at <a
href="http://forge.mysql.com/worklog/task.php?id=1326">WorkLog #1327</a>, to provide precise functions for our GIS support.</p><p>Even better, it&#8217;s fast. How fast? Well, the good people at Oki Labs, apart from having implemented <a
href="http://okilab.jp/blog/2008/07/distance_sphere_distance_spher.html">several new GIS functions</a> for MySQL, have done some benchmarking, and it&#8217;s looking good. If you&#8217;ll excuse the cliched comparison to Postgres, here are the response times (seconds) of MySQL GIS vs. PostGIS in Oki&#8217;s test:</p><table><tbody><tr><th>Connections</th><th> PostGIS</th><th> MySQL</th></tr><tr><td>1</td><td>1.817</td><td>0.220</td></tr><tr><td>100</td><td>10.517</td><td>0.557</td></tr></tbody></table><p>Source: <a
href="http://www.osgeo.jp/wordpress/wp-content/uploads/2008/11/foss4g2008_okumura.pdf">http://www.osgeo.jp/wordpress/wp-content/uploads/2008/11/foss4g2008_okumura.pdf</a></p><p>If you&#8217;re interested in checking it out, the source tree (regularly merged with MySQL 5.1) is available <a
href="https://code.launchpad.net/~mysql/mysql-server/mysql-5.1-wl1326">here</a>. Have a look at Giuseppe&#8217;s guide to <a
href="http://datacharmer.blogspot.com/2008/06/from-bazaar-to-sandbox-in-5-moves.html">running a Bazaar export</a> in <a
href="https://launchpad.net/mysql-sandbox">MySQL Sandbox</a>.</p> ]]></content:encoded> <wfw:commentRss>http://pento.net/2009/05/18/mysql-and-geospatial-data/feed/</wfw:commentRss> <slash:comments>3</slash:comments> </item> </channel> </rss>
