<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hi,<br>
That is a lot of Style filters to be applying, Is there any way you
could reduce the Categorising?<br>
The other thing is your Indexing, make sure the fields you are using
in the style are indexed, along with the Geometry.<br>
Regards,<br>
<br>
Richard<br>
<br>
<div class="moz-cite-prefix">On 14/02/2018 11:26, Enrico Fiore
wrote:<br>
</div>
<blockquote cite="mid:794998814.813761.1518607611749@mail.libero.it"
type="cite">
<meta charset="UTF-8">
<p>Hi,<br>
I have noticed that QGIS 2.18.16 has strange behavior, that I'm
going to try to explain.<br>
<br>
The view freezes for 3 - 4 seconds after zooming or dezooming
action.<br>
View freezing happen only if in the Project there is a specific
layer with categorized style (the same layer with single simbol
style doesn't cause the problem). <br>
The layer has 130421 feature (point) and 2381 items in the
legend (after have applied the style) and the datasource is db
(The problem raised happens both with data deriving from Oracle
and PostgreSQL database).<br>
<br>
<br>
The behaviour didn't happen in qgis 2.8.4.<br>
<br>
Has anyone experienced the same problem ?<br>
<br>
Can be a bug?</p>
<p><br>
</p>
<p>Enrico<br>
</p>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Qgis-user mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Qgis-user@lists.osgeo.org">Qgis-user@lists.osgeo.org</a>
List info: <a class="moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/qgis-user">https://lists.osgeo.org/mailman/listinfo/qgis-user</a>
Unsubscribe: <a class="moz-txt-link-freetext" href="https://lists.osgeo.org/mailman/listinfo/qgis-user">https://lists.osgeo.org/mailman/listinfo/qgis-user</a></pre>
</blockquote>
<br>
<div class="moz-signature">-- <br>
<b><u>Richard McDonnell</u></b><br>
<b><small><small><small>GIS Specialist PgD GIS AssocSCSI</small></small></small></b><br>
<b><small>OPW FRM Data Management</small></b><br>
<b><small>52 Stephens Green, Dublin 2.</small></b><br>
<small><small>TEL: 01 6476543</small></small></div>
<p>
<a href="http://www.opw.ie/"><img src="http://www.opw.ie/en/media/opw-logo-december-2016.gif" width="405" height="225" /></a>
</p>
<br /><br />Email Disclaimer: <a href="http://www.opw.ie/en/disclaimer/">http://www.opw.ie/en/disclaimer/</a>
</body>
</html>