[OpenLayers-Users] Overview map with ArcIMS breaks

[bartvde at osgis.nl]

Hi Vadim,

I just tried and I can reproduce your problem. Normally these issues can
be fixed by cloning the baselayer, however for the ArcIMS case this did
not work for me, probably since it misses a specific implementation of the
clone method.

However, using a nother separate ArcIMS layer for the overview map control
works okay. I know it's a workaround for the problems you encountered, but
hopefully it will keep you moving.

            layer = new OpenLayers.Layer.ArcIMS( "Global Sample Map",
                    "http://sample.avencia.com/servlet/com.esri.esrimap.Esrimap",
options );

            var overview = new OpenLayers.Layer.ArcIMS( "overview",
                    "http://sample.avencia.com/servlet/com.esri.esrimap.Esrimap",
options );

            map.addLayer(layer);

            map.addControl (new OpenLayers.Control.OverviewMap({layers:
[overview]}) );

Best regards,
Bart

>
> Hi,
>
> Created a new ticket on Trac but didn't get a response there, so I'm
> wondering if this is a user error API error
> (http://trac.openlayers.org/ticket/2490).
>
>
> When an ArcIMS layer is a base layer, the overview map doesn't load and
> errors are throw in
>
> Grid.js.addTileMonitoringHooks(tile)
>
> the "tile" that is passed is undefined. I was able to trace it back to
>
> Grid.js.initGriddedTiles(..)
>
>     => line 408
>
>      if (!tile) {
>                         tile = this.addTile(tileBounds, px);
>                         this.addTileMonitoringHooks(tile);
>                         row.push(tile);
>                     } else {
>                         tile.moveTo(tileBounds, px, false);
>                     }
>
>
> The call to
>
> tile = this.addTile(tileBounds, px);
>
> returns undefined. So it seems that the actual error is in
> ArcIMS.js.addTile(...)
>
> To replicate:
>
> 1) Take the basic ArcIMS example
>
>     http://www.openlayers.org/dev/examples/arcims.html
>
> 2) Add 1 line at the end of the init() routine to add the overview map
>
>     map.addControl (new OpenLayers.Control.OverviewMap( ) );
>
> 3) Load sample HTML file -> map loads, but the overview control throws
> errors
>
> Are there any parameters I can pass in to OverviewMap to make it work?
>
> I've tried it WMS and ArcGIS (both Tile based layers) and they both
> worked.
>
> Thanks,
>
> -Vadim
> --
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> http://n2.nabble.com/Overview-map-with-ArcIMS-breaks-tp4595244p4595244.html
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