[OpenLayers-Users] Performance Tuning in Internet Explorer

[Guillaume Sueur]

Hi,

Actually MapServer provides runtime variable substitution
(http://mapserver.org/cgi/runsub.html) which allows you to easily tune
an SQL query on the fly. Just add your specific parameters to your
OL.Layer.WMS and it will do the job. I've used that earlier for
real-time meteo data rendering, with parametric alerts depending on
user-specified factors, and it went well. 
Try to investigate that way, and please forget your +1000 vector objects
as browsers are not supposed to handle that !

Best regards,

Guillaume

Le mardi 22 septembre 2009 à 13:41 -0400,
jim.meyer at concept-solutions.com a écrit :
> Hi Till,
> 
>    We are using a lot of checkboxes on the client-side to generate a complex
> query that determines which shapes to display.  This information is sent to
> the server where a complex query runs and returns JSON to the client with
> the shape data.  These shapes are rendered in a different color based upon
> their time to activation.  I don't believe they are static enough to be able
> to use WMS.
> 
> Thanks,
> Jim
> 
> Jim Meyer
> Java Programmer
> ConceptSolutions, LLC
>     We Make Business Intelligent
> 703.889.8434 [desk]
> 703.391.9041[fax]
> www.Concept-Solutions.com
> 
> -----Original Message-----
> From: Till Adams [mailto:adams at terrestris.de] 
> Sent: Tuesday, September 22, 2009 1:00 PM
> To: jim.meyer at concept-solutions.com
> Cc: users at openlayers.org
> Subject: Re: [OpenLayers-Users] Performance Tuning in Internet Explorer
> 
> Jim,
> 
> if it is just necessary to *SHOW* the shapes you probably might check to 
> serve them as WMS (try UMN  or GeoServer) or pure as UMN-CGI service ?
> 
> Doing that, your performance is an issue of the WMS server and not of 
> OpenLayers and there are many screws to work on like indexing, 
> scale-dependency and so on...and you are more browser independet, 
> because the only thing to show is an png or gif image.
> 
> Till
> 
> 
> > Hi Christopher,
> >
> >    We are rendering active airspaces on our map.  We are required to
> render
> > this many shapes on the map.  Any other ideas?
> >
> > Thanks,
> > Jim
> >
> > Jim Meyer
> > Java Programmer
> > ConceptSolutions, LLC
> >     We Make Business Intelligent
> > 703.889.8434 [desk]
> > 703.391.9041[fax]
> > www.Concept-Solutions.com
> >
> > -----Original Message-----
> > From: Christopher Schmidt [mailto:crschmidt at metacarta.com] 
> > Sent: Tuesday, September 22, 2009 11:37 AM
> > To: jim.meyer at concept-solutions.com
> > Cc: users at openlayers.org
> > Subject: Re: [OpenLayers-Users] Performance Tuning in Internet Explorer
> >
> > On Tue, Sep 22, 2009 at 10:34:42AM -0400, jim.meyer at concept-solutions.com
> > wrote:
> >   
> >> Hi,
> >>
> >>    We are rendering a vector layer that has 1000+ shapes.  Currently, it
> >>     
> > is
> >   
> >> very slow in IE.  Any ideas as to where to start to improve performance?
> >>     
> >
> > Render fewer shapes.  
> >
> > Regards,
> >   
> 
>