Re: [Qgis-user] google layers plugin projection

[Jean-Claude Repetto]

Le 28/05/2010 15:56, Agustin Lobo a écrit :

It does not in my case, if I use a vector on ED50 UTM31 and the
project set to a custom projectione defined as
+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0
+y_0=0 +k=1.0 +units=m +nadgri...@null +wktext +no_defs
and onthefly activated: the vector is displaced ca. 100m vs the google
raster. This also happens with click-fu.


Your definition is missing the +towgs84 parameter, that's why the datum 
transformation does not occur.


Jean-Claude

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Re: [Qgis-user] google layers plugin projection

[Agustin Lobo]

It does not in my case, if I use a vector on ED50 UTM31 and the
project set to a custom projectione defined as
+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0
+y_0=0 +k=1.0 +units=m +nadgri...@null +wktext +no_defs
and onthefly activated: the vector is displaced ca. 100m vs the google
raster. This also happens with click-fu.

Agus

2010/5/28 maning sambale :
>> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 
>> +k=1.0 +units=m +nadgri...@null +wktext +no_defs
>
> This one works!  Thanks everyone.
>
>
> On Thu, May 27, 2010 at 7:16 PM, Jean-Claude Repetto  wrote:
>> Le 27/05/2010 11:55, Craig Leat a écrit :
>>>
>>> Ivan Mincik wrote:

 Yes, GoogleLayers plugin is creating layers with custom proj definition
 because in many proj instalations this
 projection is missing.

 Google projection definition:
 +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0
 +k=1.0 +units=m +nadgri...@null +no_defs
>>>
>>> On my installation I found EPSG:3785 "Popular Visualisation CRS /
>>> Mercator" with the definition:
>>> +proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137
>>> +towgs84=0,0,0,0,0,0,0 +units=m +no_defs
>>>
>>
>> EPSG code 3785 is deprecated since 2009, and has been replaced by EPSG:3857.
>>
>> Jean-Claude
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>
>
>
> --
> cheers,
> maning
> --
> "Freedom is still the most radical idea of all" -N.Branden
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Re: [Qgis-user] google layers plugin projection

[maning sambale]

> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 
> +k=1.0 +units=m +nadgri...@null +wktext +no_defs

This one works!  Thanks everyone.


On Thu, May 27, 2010 at 7:16 PM, Jean-Claude Repetto  wrote:
> Le 27/05/2010 11:55, Craig Leat a écrit :
>>
>> Ivan Mincik wrote:
>>>
>>> Yes, GoogleLayers plugin is creating layers with custom proj definition
>>> because in many proj instalations this
>>> projection is missing.
>>>
>>> Google projection definition:
>>> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0
>>> +k=1.0 +units=m +nadgri...@null +no_defs
>>
>> On my installation I found EPSG:3785 "Popular Visualisation CRS /
>> Mercator" with the definition:
>> +proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137
>> +towgs84=0,0,0,0,0,0,0 +units=m +no_defs
>>
>
> EPSG code 3785 is deprecated since 2009, and has been replaced by EPSG:3857.
>
> Jean-Claude
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-- 
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maning
--
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
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Re: [Qgis-user] google layers plugin projection

[Jean-Claude Repetto]

Le 27/05/2010 11:55, Craig Leat a écrit :

Ivan Mincik wrote:

Yes, GoogleLayers plugin is creating layers with custom proj definition because 
in many proj instalations this
projection is missing.

Google projection definition:
+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 
+units=m +nadgri...@null +no_defs


On my installation I found EPSG:3785 "Popular Visualisation CRS /
Mercator" with the definition:
+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137
+towgs84=0,0,0,0,0,0,0 +units=m +no_defs



EPSG code 3785 is deprecated since 2009, and has been replaced by EPSG:3857.

Jean-Claude
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Re: [Qgis-user] google layers plugin projection

[Craig Leat]

Ivan Mincik wrote:
> Yes, GoogleLayers plugin is creating layers with custom proj definition 
> because in many proj instalations this
> projection is missing.
>
> Google projection definition:
> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 
> +k=1.0 +units=m +nadgri...@null +no_defs

On my installation I found EPSG:3785 "Popular Visualisation CRS /
Mercator" with the definition:
+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137
+towgs84=0,0,0,0,0,0,0 +units=m +no_defs

Craig

BTW what magnitude of offset are we talking about? (I haven't followed
the thread from the start).
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Re: [Qgis-user] google layers plugin projection

[Jean-Claude Repetto]

Le 27/05/2010 01:28, maning sambale a écrit :


Thanks!  EPSG:900913 is not available in the CRS in QGIS 1.4.



Hello,

The correct EPSG code for Google Mercator is EPSG:3857

See : 



Jean-Claude
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RE: [Qgis-user] google layers plugin projection

[Benoit de Cabissole]

Maning,

Here is the definition of EPSG:900913 (Google Mercator)

+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 
+units=m +nadgri...@null +wktext +no_defs

I do not know if it is enough for you to create it?

Hope this helps
Benoit

> -Original Message-
> From: maning sambale [mailto:emmanuel.samb...@gmail.com]
> Sent: Thursday, 27 May 2010 01:29
> To: ben...@exigesa.com
> Cc: qgis-user
> Subject: Re: [Qgis-user] google layers plugin projection
> 
> 
> benoit,
> 
> Thanks!  EPSG:900913 is not available in the CRS in QGIS 1.4.  I tried
> looking for it in spatialreference.org and the closest was
> http://spatialreference.org/ref/sr-org/6627/ which I added as a custom
> SRS my vector didn't match even with OTF enabled.
> 
> On Tue, May 25, 2010 at 8:04 PM, Benoit de Cabissole 
>  wrote:
> > Maning,
> >
> > The way I'm doing it is to setup a new QGIS project using a 
> default projection of EPSG:900913 (Google Mercator) and enable 
> 'on the fly' projection. Then I open my shapefile (not raster), 
> in whatever projection it is, and display and size it to the 
> wanted window. Finally, I use the Google Layers plugin to 
> retrieve and display a Google raster that fits the window.
> > Work like a charm for me!
> >
> > Hope this helps!
> > Benoit
> >
> >
> >> -Original Message-
> >> From: qgis-user-boun...@lists.osgeo.org
> >> [mailto:qgis-user-boun...@lists.osgeo.org]on Behalf Of maning sambale
> >> Sent: Tuesday, 25 May 2010 09:21
> >> To: qgis-user
> >> Subject: [Qgis-user] google layers plugin projection
> >>
> >>
> >> I am testing the google layers plugin.  I used the SR-ORG Projection
> >> 6627 - Google Mercator  SRS parameters and enabled on-the-fly for
> >> vectors.  A googlemap image appeared but it doesn't match with my
> >> epsg:4326 shapefile.
> >> http://spatialreference.org/ref/sr-org/6627/
> >>
> >> Did I get the correct SRS?
> >> --
> >> cheers,
> >> maning
> >> --
> >> "Freedom is still the most radical idea of all" -N.Branden
> >> wiki: http://esambale.wikispaces.com/
> >> blog: http://epsg4253.wordpress.com/
> >> --
> >> ___
> >> Qgis-user mailing list
> >> Qgis-user@lists.osgeo.org
> >> http://lists.osgeo.org/mailman/listinfo/qgis-user
> >>
> >
> > ___
> > Qgis-user mailing list
> > Qgis-user@lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
> >
> 
> 
> 
> -- 
> cheers,
> maning
> --
> "Freedom is still the most radical idea of all" -N.Branden
> wiki: http://esambale.wikispaces.com/
> blog: http://epsg4253.wordpress.com/
> --
> 

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Re: [Qgis-user] google layers plugin projection

[Ivan Mincik]

On Thursday 27 May 2010, Benoit EXIGE wrote:
> Hi Maning,
> I'm using 1.5 trunk from OSGEOW and it seems that the special EPSG is
> installed with the plugin? Could the plugin author confirm? Or could
> you reinstall the plugin, if of any help?
> Alternatively I can post the EPSG values when I reach my computer.

Yes, GoogleLayers plugin is creating layers with custom proj definition because 
in many proj instalations this 
projection is missing.

Google projection definition:
+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 
+units=m +nadgri...@null +no_defs


-- 
Ivan Mincik
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Re: [Qgis-user] google layers plugin projection

[Benoit EXIGE]

Hi Maning,
I'm using 1.5 trunk from OSGEOW and it seems that the special EPSG is  
installed with the plugin? Could the plugin author confirm? Or could  
you reinstall the plugin, if of any help?

Alternatively I can post the EPSG values when I reach my computer.



Sent from my iPod

On 27 May 2010, at 1:28, maning sambale   
wrote:



benoit,

Thanks!  EPSG:900913 is not available in the CRS in QGIS 1.4.  I tried
looking for it in spatialreference.org and the closest was
http://spatialreference.org/ref/sr-org/6627/ which I added as a custom
SRS my vector didn't match even with OTF enabled.

On Tue, May 25, 2010 at 8:04 PM, Benoit de Cabissole > wrote:

Maning,

The way I'm doing it is to setup a new QGIS project using a default  
projection of EPSG:900913 (Google Mercator) and enable 'on the fly'  
projection. Then I open my shapefile (not raster), in whatever  
projection it is, and display and size it to the wanted window.  
Finally, I use the Google Layers plugin to retrieve and display a  
Google raster that fits the window.

Work like a charm for me!

Hope this helps!
Benoit



-Original Message-
From: qgis-user-boun...@lists.osgeo.org
[mailto:qgis-user-boun...@lists.osgeo.org]on Behalf Of maning  
sambale

Sent: Tuesday, 25 May 2010 09:21
To: qgis-user
Subject: [Qgis-user] google layers plugin projection


I am testing the google layers plugin.  I used the SR-ORG Projection
6627 - Google Mercator  SRS parameters and enabled on-the-fly for
vectors.  A googlemap image appeared but it doesn't match with my
epsg:4326 shapefile.
http://spatialreference.org/ref/sr-org/6627/

Did I get the correct SRS?
--
cheers,
maning
--
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
--
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--
cheers,
maning
--
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
--

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Re: [Qgis-user] google layers plugin projection

[maning sambale]

benoit,

Thanks!  EPSG:900913 is not available in the CRS in QGIS 1.4.  I tried
looking for it in spatialreference.org and the closest was
http://spatialreference.org/ref/sr-org/6627/ which I added as a custom
SRS my vector didn't match even with OTF enabled.

On Tue, May 25, 2010 at 8:04 PM, Benoit de Cabissole  wrote:
> Maning,
>
> The way I'm doing it is to setup a new QGIS project using a default 
> projection of EPSG:900913 (Google Mercator) and enable 'on the fly' 
> projection. Then I open my shapefile (not raster), in whatever projection it 
> is, and display and size it to the wanted window. Finally, I use the Google 
> Layers plugin to retrieve and display a Google raster that fits the window.
> Work like a charm for me!
>
> Hope this helps!
> Benoit
>
>
>> -Original Message-
>> From: qgis-user-boun...@lists.osgeo.org
>> [mailto:qgis-user-boun...@lists.osgeo.org]on Behalf Of maning sambale
>> Sent: Tuesday, 25 May 2010 09:21
>> To: qgis-user
>> Subject: [Qgis-user] google layers plugin projection
>>
>>
>> I am testing the google layers plugin.  I used the SR-ORG Projection
>> 6627 - Google Mercator  SRS parameters and enabled on-the-fly for
>> vectors.  A googlemap image appeared but it doesn't match with my
>> epsg:4326 shapefile.
>> http://spatialreference.org/ref/sr-org/6627/
>>
>> Did I get the correct SRS?
>> --
>> cheers,
>> maning
>> --
>> "Freedom is still the most radical idea of all" -N.Branden
>> wiki: http://esambale.wikispaces.com/
>> blog: http://epsg4253.wordpress.com/
>> --
>> ___
>> Qgis-user mailing list
>> Qgis-user@lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>
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-- 
cheers,
maning
--
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
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RE: [Qgis-user] google layers plugin projection

[Benoit de Cabissole]

Maning,

The way I'm doing it is to setup a new QGIS project using a default projection 
of EPSG:900913 (Google Mercator) and enable 'on the fly' projection. Then I 
open my shapefile (not raster), in whatever projection it is, and display and 
size it to the wanted window. Finally, I use the Google Layers plugin to 
retrieve and display a Google raster that fits the window.
Work like a charm for me!

Hope this helps!
Benoit


> -Original Message-
> From: qgis-user-boun...@lists.osgeo.org
> [mailto:qgis-user-boun...@lists.osgeo.org]on Behalf Of maning sambale
> Sent: Tuesday, 25 May 2010 09:21
> To: qgis-user
> Subject: [Qgis-user] google layers plugin projection
> 
> 
> I am testing the google layers plugin.  I used the SR-ORG Projection
> 6627 - Google Mercator  SRS parameters and enabled on-the-fly for
> vectors.  A googlemap image appeared but it doesn't match with my
> epsg:4326 shapefile.
> http://spatialreference.org/ref/sr-org/6627/
> 
> Did I get the correct SRS?
> -- 
> cheers,
> maning
> --
> "Freedom is still the most radical idea of all" -N.Branden
> wiki: http://esambale.wikispaces.com/
> blog: http://epsg4253.wordpress.com/
> --
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
> 

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[Qgis-user] google layers plugin projection

[maning sambale]

I am testing the google layers plugin.  I used the SR-ORG Projection
6627 - Google Mercator  SRS parameters and enabled on-the-fly for
vectors.  A googlemap image appeared but it doesn't match with my
epsg:4326 shapefile.
http://spatialreference.org/ref/sr-org/6627/

Did I get the correct SRS?
-- 
cheers,
maning
--
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
--
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