[OpenLayers-Users] Measure Distance? Ruler?

[Linda_Rawson]

Mike,

I was wondering if you had made progress on this project of yours.

Thanks,
Linda

Mike Adair wrote:
> 
> FYI, I'm hoping to have the Proj4js (or cscs) library finished up in a 
> few weeks so you should also be able to use that to convert point coords 
> between projections, and do the math in map projected space.
> 
> Proj4js is a port of Proj4 to Javascript, and will use 
> spatialreference.org for lookup of projection parameters, if a 
> particular projection isn't known already and it includes datum
> transforms.
> 
> Mike
> 
> 
> Erik Uzureau wrote:
>> PS. If anyone is considering building this and would like to share the
>> code with the OL repository, we would (again) be delighted. Please
>> contact me or any of the other PSC members and we can set you up with
>> wiki/trac passwords, access to a sandbox, and help you with
>> code/design decisions.
>>
>>
>>
>> On 8/21/07, Erik Uzureau <erik.uzureau at metacarta.com> wrote:
>>   
>>> all:
>>>
>>> Here is the official ticket in OL's TRAC for the path measuring tool:
>>> http://trac.openlayers.org/ticket/173
>>>
>>> There is also an open ticket for an *area* measuring tool:
>>> http://trac.openlayers.org/ticket/782
>>>
>>> Erik
>>>
>>>
>>> On 8/20/07, Chris Hardin <chrislhardin at gmail.com> wrote:
>>>     
>>>> It's been quite accurate for me.
>>>>
>>>>
>>>>
>>>> On 8/20/07, Lance Dyas <lancelot at inetnebr.com> wrote:
>>>>       
>>>>> There is accurate distance measurement using the Vincenty distance
>>>>> formula...
>>>>> Haverine is umm simulating the earth as sphere and is not accurate.
>>>>> What Open Layers lacks is a gui for measurement.
>>>>>
>>>>>         
>>>> --
>>>> Chris Hardin
>>>> Software Architect
>>>> Archetype Corporation
>>>>
>>>>       
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> 
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