Re: [OpenLayers-Users] Coordinates systems transformations?

[Mike Adair]

EPSG:23030 is a UTM projection, so yes it is supported.

Mike

David E. Reksten wrote:
> Take a look at:
> http://spatialreference.org/ref/epsg/23030/
> http://spatialreference.org/ref/epsg/23030/proj4js/
>
> .david
>
> On 13/02/2008, Ruben Pardo <[EMAIL PROTECTED]> wrote:
>   
>> hi,
>> does proj4js support EPSG:23030 to WGS84 transformation or viceversa?
>> i didn't see in the proj4js docs, is it going to support  it?
>> Thanks very much.
>>
>> best regards
>>
>>
>> 2008/2/13, David E. Reksten <[EMAIL PROTECTED]>:
>> 
>>> This is how I reproject LL to UTM32:
>>>
>>> var destProj = new Proj4js.Proj(map.getProjection()); // Euref89 UTM32
>>> var sourceProj = new Proj4js.Proj("EPSG:4326"); // WGS84 LonLat
>>> var position = new OpenLayers.Geometry.Point(lon, lat);
>>> Proj4js.transform(sourceProj, destProj, position);
>>>
>>> Thereafter, position.x and position.y will contain the reprojected
>>>   
>> coordinates.
>> 
>>> Using trunk versions of OL and Proj4js. Hope this helps.
>>>
>>> .david
>>>
>>> On 13/02/2008, Andrea Maschio <[EMAIL PROTECTED]> wrote:
>>>   
 Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
 should transform the coordinates between differents EPSG codes.

 Now I was trying this:

 var p = bounds
  console.log(p)
  p = bounds.transform(new OpenLayers.Projection("EPSG:
 900913"), new OpenLayers.Projection("EPSG:3003"))
  console.log(p)

 But p has always the same coords. Btw I am working in a projected
 layer (projected from 3003 to 900913) and my wfs layers are ok, but
 being my coords in the Gauss Boaga metric system, I cannot get them
 correctly trying for example a GetFeatureInfo call using a BBOX.

 Shall I perform a linear translation of the coordinates?

 Thanks



 Andrea Maschio
 http://www.superandrew.it

 ___
 Users mailing list
 Users@openlayers.org
 http://openlayers.org/mailman/listinfo/users

 
>>> ___
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>>>   
>> 
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Re: [OpenLayers-Users] Coordinates systems transformations?

[David E. Reksten]

Take a look at:
http://spatialreference.org/ref/epsg/23030/
http://spatialreference.org/ref/epsg/23030/proj4js/

.david

On 13/02/2008, Ruben Pardo <[EMAIL PROTECTED]> wrote:
> hi,
> does proj4js support EPSG:23030 to WGS84 transformation or viceversa?
> i didn't see in the proj4js docs, is it going to support  it?
> Thanks very much.
>
> best regards
>
>
> 2008/2/13, David E. Reksten <[EMAIL PROTECTED]>:
> > This is how I reproject LL to UTM32:
> >
> > var destProj = new Proj4js.Proj(map.getProjection()); // Euref89 UTM32
> > var sourceProj = new Proj4js.Proj("EPSG:4326"); // WGS84 LonLat
> > var position = new OpenLayers.Geometry.Point(lon, lat);
> > Proj4js.transform(sourceProj, destProj, position);
> >
> > Thereafter, position.x and position.y will contain the reprojected
> coordinates.
> >
> > Using trunk versions of OL and Proj4js. Hope this helps.
> >
> > .david
> >
> > On 13/02/2008, Andrea Maschio <[EMAIL PROTECTED]> wrote:
> > > Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
> > > should transform the coordinates between differents EPSG codes.
> > >
> > > Now I was trying this:
> > >
> > > var p = bounds
> > >  console.log(p)
> > >  p = bounds.transform(new OpenLayers.Projection("EPSG:
> > > 900913"), new OpenLayers.Projection("EPSG:3003"))
> > >  console.log(p)
> > >
> > > But p has always the same coords. Btw I am working in a projected
> > > layer (projected from 3003 to 900913) and my wfs layers are ok, but
> > > being my coords in the Gauss Boaga metric system, I cannot get them
> > > correctly trying for example a GetFeatureInfo call using a BBOX.
> > >
> > > Shall I perform a linear translation of the coordinates?
> > >
> > > Thanks
> > >
> > >
> > >
> > > Andrea Maschio
> > > http://www.superandrew.it
> > >
> > > ___
> > > Users mailing list
> > > Users@openlayers.org
> > > http://openlayers.org/mailman/listinfo/users
> > >
> > ___
> > Users mailing list
> > Users@openlayers.org
> > http://openlayers.org/mailman/listinfo/users
> >
>
>
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Re: [OpenLayers-Users] Coordinates systems transformations?

[Ruben Pardo]

hi,
does proj4js support EPSG:23030 to WGS84 transformation or viceversa?
i didn't see in the proj4js docs, is it going to support  it?
Thanks very much.

best regards


2008/2/13, David E. Reksten <[EMAIL PROTECTED]>:
>
> This is how I reproject LL to UTM32:
>
> var destProj = new Proj4js.Proj(map.getProjection()); // Euref89 UTM32
> var sourceProj = new Proj4js.Proj("EPSG:4326"); // WGS84 LonLat
> var position = new OpenLayers.Geometry.Point(lon, lat);
> Proj4js.transform(sourceProj, destProj, position);
>
> Thereafter, position.x and position.y will contain the reprojected
> coordinates.
>
> Using trunk versions of OL and Proj4js. Hope this helps.
>
> .david
>
> On 13/02/2008, Andrea Maschio <[EMAIL PROTECTED]> wrote:
> > Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
> > should transform the coordinates between differents EPSG codes.
> >
> > Now I was trying this:
> >
> > var p = bounds
> >  console.log(p)
> >  p = bounds.transform(new OpenLayers.Projection("EPSG:
> > 900913"), new OpenLayers.Projection("EPSG:3003"))
> >  console.log(p)
> >
> > But p has always the same coords. Btw I am working in a projected
> > layer (projected from 3003 to 900913) and my wfs layers are ok, but
> > being my coords in the Gauss Boaga metric system, I cannot get them
> > correctly trying for example a GetFeatureInfo call using a BBOX.
> >
> > Shall I perform a linear translation of the coordinates?
> >
> > Thanks
> >
> >
> >
> > Andrea Maschio
> > http://www.superandrew.it
> >
> > ___
> > Users mailing list
> > Users@openlayers.org
> > http://openlayers.org/mailman/listinfo/users
> >
> ___
> Users mailing list
> Users@openlayers.org
> http://openlayers.org/mailman/listinfo/users
>
___
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Re: [OpenLayers-Users] Coordinates systems transformations?

[David E. Reksten]

This is how I reproject LL to UTM32:

var destProj = new Proj4js.Proj(map.getProjection()); // Euref89 UTM32
var sourceProj = new Proj4js.Proj("EPSG:4326"); // WGS84 LonLat
var position = new OpenLayers.Geometry.Point(lon, lat);
Proj4js.transform(sourceProj, destProj, position);

Thereafter, position.x and position.y will contain the reprojected coordinates.

Using trunk versions of OL and Proj4js. Hope this helps.

.david

On 13/02/2008, Andrea Maschio <[EMAIL PROTECTED]> wrote:
> Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
> should transform the coordinates between differents EPSG codes.
>
> Now I was trying this:
>
> var p = bounds
>  console.log(p)
>  p = bounds.transform(new OpenLayers.Projection("EPSG:
> 900913"), new OpenLayers.Projection("EPSG:3003"))
>  console.log(p)
>
> But p has always the same coords. Btw I am working in a projected
> layer (projected from 3003 to 900913) and my wfs layers are ok, but
> being my coords in the Gauss Boaga metric system, I cannot get them
> correctly trying for example a GetFeatureInfo call using a BBOX.
>
> Shall I perform a linear translation of the coordinates?
>
> Thanks
>
>
>
> Andrea Maschio
> http://www.superandrew.it
>
> ___
> Users mailing list
> Users@openlayers.org
> http://openlayers.org/mailman/listinfo/users
>
___
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Re: [OpenLayers-Users] Coordinates systems transformations?

[Mike Adair]

EPSG:3003 uses a tmerc projection and is supported by Proj4js.  Did you 
remember to include the Proj4js library with a script tag in your 
application?

Mike

Andrea Maschio wrote:
> Ok, you're right 3003 isn't supported. But giving the Proj4 definition  
> i have in my proj4 (java) epsg file, which is
>
> <3003> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.999600 +x_0=150 +y_0=0  
> +ellps=intl +units=m +no_defs  <>
>
> i could simply add my definition like this
>
> Proj4js.defs["EPSG:3003"] = "+title=Gauss Boaga EPSG:3003 \
>+proj=tmerc
>+lat_0=0
>+lon_0=9
>+k=0.999600
>+x_0=150
>+y_0=0
>+ellps=intl
>+units=m
>+no_defs";
>
> ? And as I see, OpenLayers actually doesn't use proj4.js for  
> reprojecting, am I right? How can I perform the client side  
> reprojection?
>
> Geoserver does it correctly but when my map is in utm coordinates  
> (these are the googlish one, right?) if I try to get a feature via  
> BBOX the BBOX it is not in the original feature's projection  
> coordinates.
>
> Thanks a lot
> Andrea Maschio
>
> Il giorno 13/feb/08, alle ore 06:56, Eric Lemoine ha scritto:
>
>   
>> Hi,
>>
>> You need the proj4.js library to do reprojection in OpenLayers.
>>
>> https://svn.codehaus.org/mapbuilder/cscs/trunk/proj4js/lib
>>
>> Even with that I'm not sure EPSG:3003 will be supported. I recall that
>> the author of proj4.js (Mike Adair) gave a list of supported
>> projections on the OpenLayers mailing list but I can't find his email.
>> Searching the mailing on nabble you should be able to find this list
>> .
>>
>> Hope this helps;
>> --
>> Eric
>>
>>
>>
>>
>> On Feb 13, 2008 1:31 AM, Andrea Maschio <[EMAIL PROTECTED]>  
>> wrote:
>> 
>>> Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
>>> should transform the coordinates between differents EPSG codes.
>>>
>>> Now I was trying this:
>>>
>>>var p = bounds
>>> console.log(p)
>>> p = bounds.transform(new OpenLayers.Projection("EPSG:
>>> 900913"), new OpenLayers.Projection("EPSG:3003"))
>>> console.log(p)
>>>
>>> But p has always the same coords. Btw I am working in a projected
>>> layer (projected from 3003 to 900913) and my wfs layers are ok, but
>>> being my coords in the Gauss Boaga metric system, I cannot get them
>>> correctly trying for example a GetFeatureInfo call using a BBOX.
>>>
>>> Shall I perform a linear translation of the coordinates?
>>>
>>> Thanks
>>>
>>>
>>>
>>> Andrea Maschio
>>> http://www.superandrew.it
>>>
>>> ___
>>> Users mailing list
>>> Users@openlayers.org
>>> http://openlayers.org/mailman/listinfo/users
>>>
>>>   
>
> ___
> Users mailing list
> Users@openlayers.org
> http://openlayers.org/mailman/listinfo/users
>
>   
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Re: [OpenLayers-Users] Coordinates systems transformations?

[Andrea Maschio]

Ok, you're right 3003 isn't supported. But giving the Proj4 definition  
i have in my proj4 (java) epsg file, which is

<3003> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.999600 +x_0=150 +y_0=0  
+ellps=intl +units=m +no_defs  <>

i could simply add my definition like this

Proj4js.defs["EPSG:3003"] = "+title=Gauss Boaga EPSG:3003 \
   +proj=tmerc
   +lat_0=0
   +lon_0=9
   +k=0.999600
   +x_0=150
   +y_0=0
   +ellps=intl
   +units=m
   +no_defs";

? And as I see, OpenLayers actually doesn't use proj4.js for  
reprojecting, am I right? How can I perform the client side  
reprojection?

Geoserver does it correctly but when my map is in utm coordinates  
(these are the googlish one, right?) if I try to get a feature via  
BBOX the BBOX it is not in the original feature's projection  
coordinates.

Thanks a lot
Andrea Maschio

Il giorno 13/feb/08, alle ore 06:56, Eric Lemoine ha scritto:

> Hi,
>
> You need the proj4.js library to do reprojection in OpenLayers.
>
> https://svn.codehaus.org/mapbuilder/cscs/trunk/proj4js/lib
>
> Even with that I'm not sure EPSG:3003 will be supported. I recall that
> the author of proj4.js (Mike Adair) gave a list of supported
> projections on the OpenLayers mailing list but I can't find his email.
> Searching the mailing on nabble you should be able to find this list
> .
>
> Hope this helps;
> --
> Eric
>
>
>
>
> On Feb 13, 2008 1:31 AM, Andrea Maschio <[EMAIL PROTECTED]>  
> wrote:
>> Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
>> should transform the coordinates between differents EPSG codes.
>>
>> Now I was trying this:
>>
>>var p = bounds
>> console.log(p)
>> p = bounds.transform(new OpenLayers.Projection("EPSG:
>> 900913"), new OpenLayers.Projection("EPSG:3003"))
>> console.log(p)
>>
>> But p has always the same coords. Btw I am working in a projected
>> layer (projected from 3003 to 900913) and my wfs layers are ok, but
>> being my coords in the Gauss Boaga metric system, I cannot get them
>> correctly trying for example a GetFeatureInfo call using a BBOX.
>>
>> Shall I perform a linear translation of the coordinates?
>>
>> Thanks
>>
>>
>>
>> Andrea Maschio
>> http://www.superandrew.it
>>
>> ___
>> Users mailing list
>> Users@openlayers.org
>> http://openlayers.org/mailman/listinfo/users
>>

___
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Re: [OpenLayers-Users] Coordinates systems transformations?

[Eric Lemoine]

Hi,

You need the proj4.js library to do reprojection in OpenLayers.

https://svn.codehaus.org/mapbuilder/cscs/trunk/proj4js/lib

Even with that I'm not sure EPSG:3003 will be supported. I recall that
the author of proj4.js (Mike Adair) gave a list of supported
projections on the OpenLayers mailing list but I can't find his email.
Searching the mailing on nabble you should be able to find this list
.

Hope this helps;
--
Eric




On Feb 13, 2008 1:31 AM, Andrea Maschio <[EMAIL PROTECTED]> wrote:
> Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
> should transform the coordinates between differents EPSG codes.
>
> Now I was trying this:
>
> var p = bounds
>  console.log(p)
>  p = bounds.transform(new OpenLayers.Projection("EPSG:
> 900913"), new OpenLayers.Projection("EPSG:3003"))
>  console.log(p)
>
> But p has always the same coords. Btw I am working in a projected
> layer (projected from 3003 to 900913) and my wfs layers are ok, but
> being my coords in the Gauss Boaga metric system, I cannot get them
> correctly trying for example a GetFeatureInfo call using a BBOX.
>
> Shall I perform a linear translation of the coordinates?
>
> Thanks
>
>
>
> Andrea Maschio
> http://www.superandrew.it
>
> ___
> Users mailing list
> Users@openlayers.org
> http://openlayers.org/mailman/listinfo/users
>
___
Users mailing list
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[OpenLayers-Users] Coordinates systems transformations?

[Andrea Maschio]

Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)  
should transform the coordinates between differents EPSG codes.

Now I was trying this:

var p = bounds
 console.log(p)
 p = bounds.transform(new OpenLayers.Projection("EPSG: 
900913"), new OpenLayers.Projection("EPSG:3003"))
 console.log(p)

But p has always the same coords. Btw I am working in a projected  
layer (projected from 3003 to 900913) and my wfs layers are ok, but  
being my coords in the Gauss Boaga metric system, I cannot get them  
correctly trying for example a GetFeatureInfo call using a BBOX.

Shall I perform a linear translation of the coordinates?

Thanks



Andrea Maschio
http://www.superandrew.it

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