[OpenLayers-Users] overview control

[Tim Schaub]

Hey-

Huub Fleuren wrote:
> Ha Tim,
> 
> Right. I guess i did not look hard enough. And i suppose it's clear 
> enough. Relatively lots to be said about the OverviewControl though, 
> maybe change this particular line in the overviewmap.html example anyway?
> 
>  var overview = new OpenLayers.Control.OverviewMap(options);
> 
> into
> 
>  var overview = new OpenLayers.Control.OverviewMap({mapOptions:options});
> 

I think you may not be fully understanding things here.  The two lines 
above are not equivalent - in fact they are very different.

The first sets options for the control itself.

The second sets options for the map that the control has.

The control itself and the map that it has take very different options. 
  I agree that an example demonstrating this would be useful.  I've 
updated the overviewmap.html example to show two different options - 
please note, however, that the above distinction is important.

Tim


> 
> Regards, Huub
> 
> 
> Tim Schaub wrote:
>> In hopes that these links show up at the top of the google search 
>> results for OverviewMap, I'll gather doc links here:
>>
>> If you have trouble with the overview map control, please read:
>> http://trac.openlayers.org/wiki/Control/OverviewMap
>>
>> If you want to set custom map options on the overview map control, find 
>> the bit on "Custom map options" on that page.
>> http://trac.openlayers.org/wiki/Control/OverviewMap#Custommapoptions-projectionsextentsetc.
>>
>> If you like reading class documentation, please read:
>> http://dev.openlayers.org/apidocs/files/OpenLayers/Control/OverviewMap-js.html
>>
>> If you want to see the bit where it describes the mapOptions property, 
>> click on the mapOptions property.
>> http://dev.openlayers.org/apidocs/files/OpenLayers/Control/OverviewMap-js.html#OpenLayers.Control.OverviewMap.mapOptions
>>
>> If you want to learn by reading code and don't own a text editor, see
>> http://trac.openlayers.org/browser/trunk/openlayers/lib/OpenLayers/Control/OverviewMap.js
>>
>> Specifically, you can read about the mapOptions property:
>> http://trac.openlayers.org/browser/trunk/openlayers/lib/OpenLayers/Control/OverviewMap.js#L68
>>
>> Or, if you look a few lines farther down, you can read about the 
>> constructor, which mentions the mapOptions property:
>> http://trac.openlayers.org/browser/trunk/openlayers/lib/OpenLayers/Control/OverviewMap.js#L76
>>
>> There, documented :)
>>
>> Tim
>>
>> Huub Fleuren wrote:
>>   
>>> Hi,
>>>
>>> It appears to be so that the options for the overviewmapcontrol must be 
>>> set like
>>>
>>> var overviewrd = new OpenLayers.Control.OverviewMap({mapOptions:optionsrd});
>>>
>>> Thanks Steven for pointing this out
>>>
>>> Even if I read carefully in de docs i suppose that this is documented.
>>>
>>> Howefer: in the overviewmap.html example it looks like:
>>>
>>>     var overview = new OpenLayers.Control.OverviewMap(options);
>>>
>>> Allthough this also works in this case I would suggest that this will be 
>>> corrected in de distribution
>>>
>>>
>>> Regards,
>>> Huub
>>>
>>> Huub Fleuren wrote:
>>>     
>>>> Hi,
>>>>
>>>> I'm not sure but pretty sure that the overviewcontrol for a projection 
>>>> like 28992 does not work correctly (it does for 4326). What is a good 
>>>> way to go forward with this? Maybe file a trac-ticket?
>>>> I' referring to my previous contributions in this thread ...
>>>>
>>>> I tried using only different options (for the map and the 
>>>> overview)-(holding this carefully the same), it boils down to the units, 
>>>> i guess.
>>>>
>>>>
>>>>   var optionsll = {
>>>>      projection: "EPSG:4326"
>>>>     ,maxExtent: new OpenLayers.Bounds( 3.13, 50.45, 7.14,53.32)
>>>>     ,maxResolution: 1500
>>>>     ,scales:[2500000, 1200000, 600000, 300000, 150000, 75000, 37000, 
>>>> 12500, 4250]
>>>>   };
>>>>
>>>>   var optionsrd = {
>>>>      projection: "EPSG:28992"
>>>>     ,units:"m"
>>>>     ,maxExtent: new OpenLayers.Bounds( 0,300000,250000,650000)
>>>>     ,maxResolution: 1500
>>>>     ,scales:[2500000, 1200000, 600000, 300000, 150000, 75000, 37000, 
>>>> 12500, 4250]
>>>>
>>>>   };
>>>>
>>>>
>>>> Regards, Huub
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at openlayers.org
>>>> http://openlayers.org/mailman/listinfo/users
>>>>
>>>>
>>>>
>>>>
>>>>   
>>>>       
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>>>
>>>
>>>
>>>     
>>
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