[OpenLayers-Users] RE measure with 2398

[Steve.Toutant at inspq.qc.ca]

I would try this

- Remove geodesic:true from the map option
- set the measure option like this
  var measureOptions = {
 persist :true,
 geodesic: true,
 handlerOptions : {
   style :"default"
}
}

hope this helps
steve

 




Tim Balschmiter <tb.rostock at googlemail.com> 
24/09/2009 09:06 AM

A
Steve.Toutant at inspq.qc.ca
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Users at openlayers.org
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Re: RE [OpenLayers-Users] measure with 2398








Thanks for these answer, but that idea does not work.
this is my map options:
  function createMap() {
            map = new OpenLayers.Map("map",{geodesic: true,projection: 
"EPSG:2398",controls:[],scales:[442943842.5,221471921.25,110735960.625,55367980.3125,27683990.15625,13841995.078125,6920997.5390625, 
3460498.76953125, 1730249.384765625,865124.6923828125, 432562.34619140625, 
216281.17309570312, 108140.58654785156,
                    54070.29327392578, 10000.0, 5000.0,1000.0],maxExtent: 
new OpenLayers.Bounds(4504884.5,5997999.5,4506172.5,5999757.5)});
            return map;
        }
        
and that my new measure options:

  var measureOptions = {
 handlerOptions : {
   style :"default",
 persist :true,
 projection: "EPSG:2398",
 geodesic: true
}
}

2009/9/24 <Steve.Toutant at inspq.qc.ca>

Hi,
Try to add geodesic: true as an option. 
Is EPSG:2398, the projection defined in the option of the map object? 
Steve 




Tim Balschmiter <tb.rostock at googlemail.com>@openlayers.org 
Envoyé par : users-bounces at openlayers.org 
24/09/2009 02:17 AM 


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Users at openlayers.org 
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Objet
[OpenLayers-Users] measure with 2398










Hello list, i am using the measure-option, but i get wrong  distance, if i 
am using projection 2398. 
What can i do to get the right values?! 
thanks for helping me 
tim 
code: 

var measureOptions = { 
 handlerOptions : { 
   style :"default", 
 persist :true, 
 projection: "EPSG:2398" 
} 
} 
var lineMeasure = new OpenLayers.Control.Measure( 
OpenLayers.Handler.Path, measureOptions); 
var polygonMeasure = new OpenLayers.Control.Measure( 
OpenLayers.Handler.Polygon, measureOptions); 

lineMeasure.events.on( { 
"measure" :handleDistanceMeasurements, 
"measurepartial" :handleDistanceMeasurements 
}); 
polygonMeasure.events.on( { 
"measure" :handleAreaMeasurements, 
"measurepartial" :handleAreaMeasurements 
}); 

function handleAreaMeasurements(event) { 
var units = event.units; 
var measure = event.measure; 
var element = document.getElementById('messung'); 
var out = ""; 
out += "Fläche: " + measure.toFixed(3) + " " + units 
+ "<sup>2</sup>"; 
element.innerHTML = out; 
} 
function handleDistanceMeasurements(event) { 
          var units = event.units; 
var measure = event.measure; 
var element = document.getElementById('messung'); 
var out = ""; 
out += "Distanz: " + measure.toFixed(3) + " " + units; 
element.innerHTML = out; 
};_______________________________________________
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