[OpenLayers-Users] Turning on/off layers depending on zoom level

[kaka]

Yes, you are right about the resolution, I mistyped it in my last post. The
problem I have with the current map reveals itself when zooming out - the
markers are no longer correctly placed in the map. When I zoom out, they are
placed at locations very far from their original locations (Tanzania).

Magnus




Erik Uzureau-3 wrote:
> 
> Thanks for sending the link. Unfortunately, I still can't quite see
> what the problem is.
> The resolution set in the link you sent is 0.02, not 0.2
> I changed it to 0.03 and it seemed to not change much either.
> 
> Maybe if you can be more descriptive of the problem we can better track it
> down.
> 
> --Erik
> 
> On 4/10/07, kaka <drspencer at hotmail.com> wrote:
>>
>> This is an example of the problem I have:
>>
>> http://www.villageografica.com/test44/Africa-test.html
>>
>> If I change the maxResolution to 0.2 the map works fine, but its current
>> 0.3
>> won´t work. I hope this illustrates my problem.
>>
>> Magnus
>>
>>
>>
>> Erik Uzureau-3 wrote:
>> >
>> > Dear Kaka,
>> >
>> > Do you have a live example that you could post a link to?
>> > Offhand, I can't see what the problem is... but I might be
>> > able to help you out if I could see it in action
>> >
>> > Erik,
>> > Best
>> >
>> > On 4/10/07, kaka <drspencer at hotmail.com> wrote:
>> >>
>> >> Thank you very much, Erik, this has been a great help. However, I have
>> >> run
>> >> into a problem. If the markers are set to not show on first load, but
>> to
>> >> appear when zooming in, the show/hide functionality stops working and
>> the
>> >> markers are dislocated when zooming out. My code looks like this:
>> >>
>> >> var MarkersLayer2 = new OpenLayers.Layer.Text( "Region info",
>> {location:
>> >> "markers.txt", maxResolution: 0.03});
>> >>
>> >> Changing the "0.3" to "0.2" causes the problems mentioned above. Is
>> this
>> >> related to my code or a possible bug?
>> >>
>> >> Magnus
>> >>
>> >>
>> >>
>> >>
>> >> kaka wrote:
>> >> >
>> >> > Hi
>> >> > I am trying to turn on/off a layer of markers depending on zoom
>> level,
>> >> > using google maps as a background layer. Does anyone have
>> suggestions
>> >> on
>> >> > how to achieve this or is there or maybe an example? Thank you for
>> any
>> >> > ideas.
>> >> >
>> >> > Regards,
>> >> >
>> >> > Magnus
>> >> >
>> >>
>> >> --
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>> >>
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>> >>
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