<div dir="ltr">Hi<div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jan 22, 2014 at 2:47 PM, Tim Sutton <span dir="ltr"><<a href="mailto:lists@linfiniti.com" target="_blank">lists@linfiniti.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi<div class="gmail_extra"><br><br><div class="gmail_quote"><div><div class="h5">On Wed, Jan 22, 2014 at 1:23 PM, Martin Dobias <span dir="ltr"><<a href="mailto:wonder.sk@gmail.com" target="_blank">wonder.sk@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>On Wed, Jan 22, 2014 at 4:33 PM, Tim Sutton <<a href="mailto:lists@linfiniti.com" target="_blank">lists@linfiniti.com</a>> wrote:<br>
>><br>
>> Actually the point displacement renderer already does clustering,<br>
>> though it lacks more options to customize how the clustered symbol<br>
>> would look like.<br>
>><br>
><br>
> Doesnt it do the reverse? i.e. when more than one point falls in the same<br>
> place, it shifts them aside so they are all visible. If it can be made to<br>
> produce a scaled symbol based on the number of underlying points that would<br>
> be cool.That would also be a good time to change its name to 'Custer or<br>
> displace' or something.<br>
<br>
</div>I think that was what the renderer did originally, but nowadays it<br>
also groups points within configured distance. Unfortunately it always<br>
tries to draw a circle around the clustered point with original<br>
symbols. If we introduced few rendering options, it would be more<br>
useful:<br>
- draw just the clustered symbol for the whole group<br>
- scale the clustered symbol depending on the number of points inside<br>
<br></blockquote><div><br></div></div></div><div>Yeah that should do it!</div><div><br></div></div></div></div></blockquote><div><br></div><div>I tested with a large point dataset (geonames ~3.5 million records). Basically enabling the point displacement renderer on that layer kills (or takes so long I killed it) QGIS. Since the essence of clustering is to speed up rendering times and reduce visual clutter, I suspect simple tweaks to the renderer would not be enough.</div>
<div><br></div><div>Regards</div><div><br></div><div>Tim</div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra">
<div class="gmail_quote"><div></div><div>Regards</div><div><br></div><div>Tim</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Cheers<br>
<span><font color="#888888">Martin<br>
</font></span></blockquote></div><div class="im"><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Tim Sutton - QGIS Project Steering Committee Member<br>==============================================<br>Please do not email me off-list with technical<br>
support questions. Using the lists will gain<br>more exposure for your issues and the knowledge<br>surrounding your issue will be shared with all.<br><br>Irc: timlinux on #qgis at <a href="http://freenode.net" target="_blank">freenode.net</a><br>
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</div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Tim Sutton - QGIS Project Steering Committee Member<br>==============================================<br>Please do not email me off-list with technical<br>
support questions. Using the lists will gain<br>more exposure for your issues and the knowledge<br>surrounding your issue will be shared with all.<br><br>Irc: timlinux on #qgis at <a href="http://freenode.net" target="_blank">freenode.net</a><br>
==============================================</div>
</div></div>