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Hi,<br>
it's impossible that a pedal car is nearly as fast as a f1 car and
take as much as a truck. My opinion is that either you force your
customer to use safe and fast browsers or you have to reduce the
load by minimum of polygons drawn or switch to a desktop prog like
QuantumGIS. Minimize the number of geometries by a strategy, if you
want to edit them then cluster is not an alternative. If you pass
attributes with your features then you can leave them out and load
them later, if you need them. I don't know if it helps and this is
not a standardized solution, if you minimize your data to the less
verbose format, I think it's WKT or a custom json, and write your
own update Serversidewhatever. Simply a simple format to parse for
the browser with minimum of memory consumption. But I think, it will
be much work for at best little more performance.<br>
We must also always say our users to switch to a new browser if they
want to have the functionality and speed("Sry, there is a minimum
requirement. It's free, ask/force your admin to install it."). In
the end there is no workaround you can only cut things out. You
never will have a performance like chrome or ff out of a bad engine.
Think about how much seconds you spend to get a second less for
users.<br>
I know there is no solution for your performance problem but maybe
an argument for your customers.<br>
Best regards<br>
Slawomir<br>
<br>
Am 07.04.2011 14:21, schrieb David Alda Fernandez de Lezea:
<blockquote
cite="mid:224DBDAF88A6AC47BD22432815351BE0088B6868@nekaposta1"
type="cite">
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charset=ISO-8859-1">
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<div dir="ltr" align="left"><span class="418531012-07042011"><font
color="#0000ff" face="Arial" size="2">Zac,</font></span></div>
<div dir="ltr" align="left"><span class="418531012-07042011"></span> </div>
<div dir="ltr" align="left"><span class="418531012-07042011"><font
color="#0000ff" face="Arial" size="2">thanks for your
response. I know IE sux, but 95% of our customers have IE6
installed, and they are not allowed to switch to another
version or to get other browsers.</font></span></div>
<div dir="ltr" align="left"><span class="418531012-07042011"></span> </div>
<div dir="ltr" align="left"><span class="418531012-07042011"><font
color="#0000ff" face="Arial" size="2">I get the polygons
from GeoServer from a wfs layer. They are complex polygons
with lots of vertices (parcels from cadastre) and I can't
simplify the features because we are on the task of online
editing using wfs-t protocol, so the edition must be
accurate.</font></span></div>
<div dir="ltr" align="left"><span class="418531012-07042011"></span> </div>
<div dir="ltr" align="left"><span class="418531012-07042011"><font
color="#0000ff" face="Arial" size="2">I'm just wondering if
there is something that I can show, like a progress bar or
loading image, to tell the user this kind of operations will
take a bit, but I'm afraid is going to be difficult because
of the browser program.</font></span></div>
<div> </div>
<div><span class="418531012-07042011"><font color="#0000ff"
face="Arial" size="2">Any idea?</font></span></div>
<div><span class="418531012-07042011"></span> </div>
<div><span class="418531012-07042011"><font color="#0000ff"
face="Arial" size="2">Regards,</font></span></div>
<div class="Section1">
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
'Frutiger 55 Roman';">Un saludo,</span></p>
<div>
<p class="MsoNormal"><span style="font-size: 7.5pt;
font-family: Verdana;"> <o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size: 10pt; font-family:
'Frutiger 55 Roman';">··················································································</span><span
style="font-size: 7.5pt; font-family: Verdana;"><br>
</span><span style="font-size: 10pt; font-family: 'Frutiger 55
Roman';"></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><b><span
style="font-size: 9pt;"><font face="Verdana">David Alda
Fernández de Lezea</font></span></b></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span
style="font-size: 8pt; font-family: Verdana;">Lurralde eta
Biodibertsitate Saila / Dpto. de Territorio y Biodiversidad<o:p></o:p></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span
style="font-size: 8pt; font-family: Verdana;"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><b style=""><span
style="font-size: 8pt; font-family: Verdana;">IKT<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin: 0cm 0cm 0pt;"><span
style="font-size: 8pt; font-family: Verdana;">Granja Modelo
s/n · 01192 · Arkaute (Araba)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 7.5pt; font-family:
Verdana;"><br>
··················································································<br>
Tlfnos.: 945-00-32-95<span style=""> </span><span style=""> </span><span
style=""> </span>Fax: 945-00.32.90<br>
··················································································<br>
email: <a moz-do-not-send="true" href="mailto:dalda@ikt.es">dalda@ikt.es</a>
web: <a moz-do-not-send="true" href="http://www.ikt.es/">www.ikt.es</a><br>
··················································································<o:p></o:p></span></p>
</div>
<div> </div>
<br>
<div class="OutlookMessageHeader" dir="ltr" align="left" lang="es">
<hr tabindex="-1">
<font face="Tahoma" size="2"><b>De:</b>
<a class="moz-txt-link-abbreviated" href="mailto:openlayers-users-bounces@lists.osgeo.org">openlayers-users-bounces@lists.osgeo.org</a>
[<a class="moz-txt-link-freetext" href="mailto:openlayers-users-bounces@lists.osgeo.org">mailto:openlayers-users-bounces@lists.osgeo.org</a>] <b>En
nombre de </b>Zac Spitzer<br>
<b>Enviado el:</b> jueves, 07 de abril de 2011 13:33<br>
<b>Para:</b> <a class="moz-txt-link-abbreviated" href="mailto:openlayers-users@lists.osgeo.org">openlayers-users@lists.osgeo.org</a><br>
<b>Asunto:</b> Re: [OpenLayers-Users] Browser slow performance
while parsingOpenLayers.Vector.Feature features<br>
</font><br>
</div>
short answer, IE just sucks<br>
<br>
long answer, you could switch over to a real mapserver engine<br>
<br>
how dense are your polygons? generalising them might help a bit if
they are very dense<br>
<br>
<div class="gmail_quote">On Thu, Apr 7, 2011 at 9:29 PM, David
Alda Fernandez de Lezea <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:dalda@ikt.es">dalda@ikt.es</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="padding-left: 1ex;
margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
204, 204);">Hi list,<br>
<br>
I'm having some performance issues with most browsers, but
specially with IE (this is the real problem).I have a vector
layer in which once the map is shown I load from 50 to 100
polygons and I zoom to them. I know that this is a task it
will consume some time, but the problem is that the browser
gets freezed and I would like to improve that in order to
improve the user experience.<br>
<br>
I've tried this in<br>
<br>
FF --> 5-10 seconds<br>
Safari --> 5 seconds<br>
Chrome --> 5 seconds<br>
Opera --> 5 seconds<br>
IE6 --> 60 seconds<br>
IE7 --> 40 seconds<br>
IE8 --> 30 seconds<br>
<br>
Is there something that I can do to improve the browser's
response??<br>
<br>
Thanks.<br>
<br>
Un saludo,<br>
<br>
··················································································<br>
<br>
David Alda Fernández de Lezea<br>
Lurralde eta Biodibertsitate Saila / Dpto. de Territorio y
Biodiversidad<br>
<br>
IKT<br>
Granja Modelo s/n · 01192 · Arkaute (Araba)<br>
<br>
··················································································<br>
Tlfnos.: 945-00-32-95 Fax:
945-00.32.90<br>
··················································································<br>
email: <a moz-do-not-send="true" href="mailto:dalda@ikt.es">dalda@ikt.es</a>
web: <a moz-do-not-send="true"
href="http://www.ikt.es" target="_blank">www.ikt.es</a><br>
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</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
Zac Spitzer <br>
Solution Architect / Director<br>
Ennoble Consultancy Australia<br>
<a moz-do-not-send="true" href="http://www.ennoble.com.au">http://www.ennoble.com.au</a><br>
<a moz-do-not-send="true" href="http://zacster.blogspot.com">http://zacster.blogspot.com</a><br>
+61 405 847 168<br>
<br>
<br>
<br>
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