Limiting the viewable extent...

[Stephen Woodbridge]

Daniel,

Thanks. What do you think of adding it to the 5.0 plans to add 
MAXEXTENTS tag to the MAP object that would do this? This question seems 
to come up fairly regularly in one context of another.

-Steve W.

Daniel Morissette wrote:
> In MapScript, the mapObj methods zoomPoint() and zoomRectangle() take a 
> maximum extent for that purpose, but I don't think there is any way to 
> set a limit on extents in the mapfile directly that would apply to the 
> mapserv CGI and WMS interfaces.
> 
> Daniel
> 
> Stephen Woodbridge wrote:
>> Steve,
>>
>> I may be confusing this with a feature of ka-map, but I'm not sure. 
>> Steve L do you know if there is such a feature in mapserver?
>>
>> -Steve W
>>
>> ps: lots of Steve is confusing!
>>
>> Steve Hall wrote:
>>> Stephen Woodbridge wrote:
>>>> Steve Hall wrote:
>>>>> Hi all,
>>>>>
>>>>> Is it possible to restrict the users viewable extent of the map 
>>>>> through the map file?  For example, I have data loaded for the 
>>>>> whole of the country but I want it to be impossible for any client 
>>>>> tool to view data beyond a defined and fixed extent.
>>>>>
>>>>> The EXTENT parameters just seem to set the initial extent and you 
>>>>> can easily zoom out beyond this extent.
>>>>>
>>>>> I appreciate this is fairly easy to do through code but though that 
>>>>> if this was possible via a mapfile then it would be done at the 
>>>>> 'lowest' level...
>>>>
>>>> Yes, I believe you can do it by setting METADATA values for the MAP 
>>>> object. I just check the mapfile reference and it is not described 
>>>> there. Could you please write a documentation bug to request all 
>>>> METADATA controls be documented.
>>>>
>>>> -Steve W.
>>>>
>>> Thanks for this Steve, do you happen to know off hand any of the 
>>> relevant keywords to this problem (to get me started).  I could take 
>>> a look through the code and dig deeper if I have somewhere to 
>>> start.   This will also enable me to file a more accurate and useful 
>>> bug...
>>>
>>> Cheers,
>>> Steve H
> 
>