[Qgis-user] Projection of Shapefile export

[Brett Adams]

  Micha,
I've attached csv data for importing and all shape files exported. I've 
added comments into your prior email also.

Brett

On 16/09/2010 9:29 PM, Micha Silver wrote:
> Hi Brett:
> (cc-ing the list also)
>
> So if I understand correctly:
> 1- You have coordinate locations in an ascii file which are already in 
> AGD84 zone 51 CRS : /Yes/
> 2- You have imported the locations into QGIS using the Delimited Text 
> plugin :/Yes/
> 3- You then export to a shapefile. In the export dialog you select 
> EPSG: 20351 for the CRS, but the resulting shapefile has NO projection 
> information.(i.e. no *.prj is created?) /No./
/In the export dialogue I choose UTM - AGD84 / AMG zone 51(Don't know  
EPSG:20351 )/


> 4- You tried to set projection info with the "Vector->Data Management 
> Tools->Define Current Projection" /Yes, this will run or say 
> "Identical outout spatial reference system chosen"
> / 

> 5- Now the new shapefile still does not have CRS ? (i.e. QGIS asks 
> what CRS when you load the shapefile) : /Not quite. Both prj and qpj 
> files are created but the DATUM is always "D_unknown" which defaults 
> to WGS84 when imported into QGIS / Mapinfo. /
>
> If I've got the picture right, can you check that NO *.prj or *.qpj is 
> created on the disk with the other elements of the shapefile?  Would 
> you mind sending me a bit of the ascii file with coord locations so I 
> can retry?  If this persists, I suggest to report to Carson Farmer, 
> creator of the fTools plugin. There was a problem in the past with 
> creating a *.prj file, and I believe it has already been fixed. If 
> not, he needs to know./ I think this problem is different.
> /
> Regards,
> Micha
>
> On 16/09/2010 14:47, Brett Adams wrote:
>>  Micha,
>> Updated to 1.5 and have tried defining the current projection as 
>> suggested but my exports never carry the correct projection. 
>> Everything goes in as AGD84/zone51 and comes out projection free 
>> which is then defaults to WGS84. Even tried loading files with the 
>> AGD84 projection from MAPINFO then exporting, and again they export 
>> without projection and default to WGS84.
>>
>> I'm obviously missing a fairly major step, but is it really that hard?
>>
>>
>>
>>
>>
>> On 16/09/2010 3:09 PM, Micha Silver wrote:
>>> On 16/09/2010 09:01, Brett Adams wrote:
>>>> The original file is one created by me via import of delimted text so
>>>> I'm certain of the projection.
>>> Question is does QGIS know the projection. If there is no *.prj 
>>> attached to the shapefile, try to add projection info with the 
>>> Vector->Data Management->Define Currnet Projection. Then do your 
>>> export.
>>>
>>>> I'll try upgrading to 1.5. See if it makes any difference.
>>>>
>>>>
>>>> 2010/9/16 Micha Silver<micha at arava.co.il>:
>>>>> On 16/09/2010 03:19, Brett Adams wrote:
>>>>>> Hi folks,
>>>>>> When I export a layer as a shapfile the projection is always WGS84,
>>>>>> even though I specify AGD84 on export.
>>>>>>
>>>>>> Am I doing something wrong or is this a bug?
>>>>>>
>>>>>>
>>>>> Are you sure the original shapefile has correct CRS data? That is, 
>>>>> does it
>>>>> have a *.prj ?
>>>>> Also, I'm not 100% sure that exporting to a new CRS was available 
>>>>> in 1.4.
>>>>> You might go ahead and upgrade to 1.5 where the feature does work.
>>>>>> Running Version 1.4.0
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>>
>>>>>
>>>>> -- 
>>>>> Micha Silver
>>>>> http://www.surfaces.co.il/
>>>>> Arava Development Co.  +972-52-3665918
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>


-- 
Brett Adams
Spinifex Geophysics
0438 861 974
SKYPE:brettadams_spinifex

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