[OpenLayers-Users] Theoretical client-side implementation

[Arnd Wippermann]

Hi,
 
i would think, a clientside solution should be possible. It's possible to
change the display of features due to given attributes.
 
http://gis.ibbeck.de/ginfo/apps/OLExamples/OL26/examples/styles_unique_with_
group.html
 
The example has only a couple of features. I don't know, if there would be
performance problems with 400 features.
 
You can also look at
 
http://gis.ibbeck.de/ginfo/apps/OL27Client/OL27ClientGis.asp?WMC=./data/WMC/
GML%20Wuppertal%20GeoPoints%20Singles.wmc.xml
 
It shows a couple of vector layers, that use always the same gml source (360
point features), only the applied rules for the feature styles are
different. 
 
Arnd
 
  _____  

Von: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] Im
Auftrag von Nicholas Efremov-Kendall
Gesendet: Mittwoch, 10. Juni 2009 23:18
An: users at openlayers.org
Betreff: [OpenLayers-Users] Theoretical client-side implementation


Hi all,

Just a hypothetical question. I'm trying to come up with a way of producing
map which has points that have popups describing the sites/points attribute
data. The idea has been to have this database driven map where a unique
user-generated data is loaded based on the search criteria. The database
itself is nothing more than a giant spreadsheet, and I wonder if a
client-side solution might not be possible. That is, load all the points at
once (n < 400), and then hide or show depending on user input. I'm
envisioning having buttons which have an on-click event which either changes
their color, or hides all that don't match (i.e. affecting their visibility)
based on an if statement (i.e. if site_type === true, change style, etc).
Would this be "easier" than trying to echo out a new GML file everytime a
user enters a search? The popups don't need to have more than a few elements
of attribute data.

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