<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:10pt"><div><span>Andrea,</span></div><div><span></span> </div><div><span>QGIS allows you to enable/disable the drawing of the features as they're loading. Please try to load that huge dataset with the </span></div><div><span>drawing disabled to see if this increase the performance. After the load got finished, enable the drawing again.</span></div><div><span></span> </div><div><span>Cheers from México</span></div><div> </div><div><font style="color: rgb(0, 96, 191); font-family: verdana, helvetica, sans-serif; font-weight: bold;" size="2">IC Carlos Ruiz</font></div><div><strong><font color="#0060bf" face="Verdana"></font></strong> </div><div style="font-family: Courier New, courier, monaco, monospace, sans-serif; font-size: 10pt;"><div style="font-family: times new roman, new york, times, serif;
font-size: 12pt;"><font size="2" face="Arial"><div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" class="hr" contentEditable="false" readonly="true"></div><b><span style="font-weight: bold;">From:</span></b> Andrea Peri <aperi2007@gmail.com><br><b><span style="font-weight: bold;">To:</span></b> TinyOWS users discuss list <tinyows-users@lists.maptools.org><br><b><span style="font-weight: bold;">Sent:</span></b> Thursday, September 1, 2011 4:35 PM<br><b><span style="font-weight: bold;">Subject:</span></b> [TinyOWS-users] An enhancement for TinyOWS<br></font><br><div id="yiv1615905667">Hi,<br><br>I'm study-ing TinyOWS as server WFS,<br>using qgis as wfs client.<br><br>I notice a procedural issue when the dataset is huge.<br><br>It need a very much time to startup on first visualization.<br>The qgis plugin need to download all the dataset.<br>
The only solution to avoid this time lost, is activate the "limit-feature" option.<br>But it is a strange solution.<br>Infact the qgis WFS-plugin download the first feature untile the limit set, and after don't show any other dataset.<br>
If I try to zoon to a details if the detail is out of the first downloaded feature, simply qgis show nothing.<br>Perhaps this is an issue of qgis plugin, but however I guess the "limit-feature" solution for huge dataset is not a <br>
solution in many use-case.<br><br>I guess a better approach should be a <br>dimension approach.<br>Allowing the size in unit of length of the max dataset retrievable.<br><br>something like<br><pre class="yiv1615905667wiki"><limits unit-of-lenght="1000" /> (dont send when the portion asked is more than a square of 1000x1000 unit-of-lenght)<br>
<br></pre>For example setting max retrievable size = 1000 meters,<br>the wfs server should be send data only if the bbox asked has a size under<br>1000meters x 1000meters<br><br>Without see how much features it could contains.<br>
<br>Of course this mean to set something like a scale-dependent limitation,<br>but this in many use-case is more affordable then a limit-features .<br><br>Regards,<br><br>-- <br>-----------------<br>Andrea Peri<br>. . . . . . . . . <br>
qwerty àèìòù<br>-----------------<br><br>
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