[Qgis-user] Re: Question about changing Project for Vector Layers

[G. Allegri]

The openlayers plugin sets automatically the project projection to that of
Google Maps (EPSG:900913, EPSG:3875, or however we want to call it) when you
load a GMap layer.

giovanni

2011/10/12 Lenny Sorey <lsorey at gmail.com>

> Thanks for your response Giovanni.
>
> OK, now I have the on-the-fly re-projection checkbox enabled in the project
> settings.
>
> I should mentioned that I am on the OSEGeo4w Windows nightly build version
> of QGIS.
>
> One thing I did notice when the options panel on-the-fly re-projection is
> enabled is that the
> the vectors appear now in in WGS84 with the lat/lon's I now recognized.
> But, when I add
> an Openlayer Google Satellite Hybrid plugin layer my WGS84  -90.15628,
> 32.43978 lon/lat display
> at the bottom of QGIS turns into -10036151.0, 3821178.0 based on based on
> google's EPSG: 900913.
>
> I have never noticed the change in the lon/lat from -90.15628, 32.43978 to
> -10036151.0, 3821178.0
> before when re-projecting with the Openlayer Plugin.
>
> Am I just missing something here?
>
> Thanks,
>
> Lenny
>
>
> On Wed, Oct 12, 2011 at 1:49 AM, G. Allegri <giohappy at gmail.com> wrote:
>
>> Do you have enabled on-the-fly reprojection inside the options panel?
>>
>> giovanni
>>
>> Inviato da dispositivo mobile
>> Il giorno 12/ott/2011 00.14, "Lenny Sorey" <lsorey at gmail.com> ha scritto:
>>
>>>  Sorry, I failed to mentioned the version of QGIS that I am on.
>>>
>>> It is 1.8.0-104 nightly build version.
>>>
>>> Thanks Again,
>>>
>>> Lenny
>>>
>>> On Tue, Oct 11, 2011 at 4:27 PM, Lenny Sorey <lsorey at gmail.com> wrote:
>>>
>>>> Sorry for the lengthy email.
>>>>
>>>> Got a question about changing the projection for the following to WGS84:
>>>>
>>>> I received shapefiles info for my neighborhood but the projection is in
>>>> NAD_1983_StatePlane_Mississippi_West_FIPS_2302_Feet (NAD83 / Mississippi
>>>> West (ftUS in QGIS)
>>>>
>>>> In my project settings I have WSG84 set as the default projection as
>>>> well as layer units set to Decimal Degrees.
>>>>
>>>> For some reason unknown to me, it does not appear that the projection is
>>>> displaying in WGS84.
>>>>
>>>> From the Properties MetaData Tab, the following displays:
>>>>
>>>> In layer spatial reference system units : xMin,yMin
>>>> 2349376.08,1066253.54 : xMax,yMax 2353354.03,1070858.08
>>>> Layer Spatial Reference System: +proj=longlat +ellps=WGS84
>>>> +towgs84=0,0,0,0,0,0,0 +no_defs
>>>>
>>>> From the Coordinate windows at the bottom of QGIS canvas, the lat/lon
>>>> displays as the following:
>>>>
>>>> 2351256, 1069360
>>>>
>>>> When normally it displays in WGS84 as
>>>>
>>>> -90.155924, 32.439683
>>>>
>>>> How do I go about changing to a WGS84 projection display and save those
>>>> changes to the attributes.
>>>>
>>>> The following is a MetaData Extraction from the my Shapefiles.
>>>>
>>>>
>>>> PROJCS["NAD_1983_StatePlane_Mississippi_West_FIPS_2302_Feet"
>>>> ,GEOGCS["GCS_North_American_1983"
>>>> ,DATUM["D_North_American_1983"
>>>> ,SPHEROID["GRS_1980",6378137.0,298.257222101]]
>>>> ,PRIMEM["Greenwich",0.0]
>>>> ,UNIT["Degree",0.0174532925199433]]
>>>> ,PROJECTION["Transverse_Mercator"]
>>>> ,PARAMETER["False_Easting",2296583.333333333]
>>>> ,PARAMETER["False_Northing",0.0]
>>>> ,PARAMETER["Central_Meridian",-90.33333333333333]
>>>> ,PARAMETER["Scale_Factor",0.99995]
>>>> ,PARAMETER["Latitude_Of_Origin",29.5]
>>>> ,UNIT["Foot_US",0.3048006096012192]
>>>> ,AUTHORITY["EPSG",2255]]
>>>> </WKT>
>>>> <XOrigin>-16151000</XOrigin>
>>>> <YOrigin>-43523900</YOrigin>
>>>> <XYScale>137248168.13086346</XYScale>
>>>> <ZOrigin>-100000</ZOrigin>
>>>> <ZScale>10000</ZScale>
>>>> <MOrigin>-100000</MOrigin>
>>>> <MScale>10000</MScale>
>>>> <XYTolerance>0.0032808333333333335</XYTolerance>
>>>> <ZTolerance>0.001</ZTolerance>
>>>> <MTolerance>0.001</MTolerance>
>>>> <HighPrecision>true</HighPrecision>
>>>> <WKID>2255</WKID>
>>>> </ProjectedCoordinateSystem>
>>>>
>>>>
>>>> ***********************************************************************************
>>>> spdom
>>>> bounding
>>>> westbc - -90.450396
>>>> eastbc - -89.728383
>>>> northbc - 32.886527
>>>> southbc - 32.398196
>>>>
>>>>
>>>> ********************************************************************************************
>>>> Ibounding
>>>> leftbc - 2260647.213986
>>>> rightbc - 2482295.893382
>>>> bottombc - 1054664.469330
>>>> topbc - 1231806.672290
>>>>
>>>>
>>>> **********************************************************************************************
>>>> GeoBndBox
>>>> westBL - 2260647.213986
>>>> eastBL - 2482295.893382
>>>> northBL - 1231806.67229
>>>> southBL - 1054664.46933
>>>> exTypeCode
>>>>
>>>>
>>>> ************************************************************************************************
>>>> geoBox
>>>> westBL - -90.450396
>>>> eastBL - -89.728383
>>>> northBL - 32.886527
>>>> southBL - 32.398196
>>>>
>>>>
>>>> ***************************************************************************************************
>>>>
>>>> Thanks in advance for your help on this request or could someone point
>>>> me to some a QGIS example that would help.
>>>>
>>>> Regards,
>>>>
>>>> Lenny
>>>>
>>>
>>>
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>
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