[Qgis-user] projection change

[Micha Silver]

On 17/12/2009 10:49, ahmet temiz wrote:
> thank you
>
> I tried as you have suggested. But there seems to be something wrong.
>
> resulting map's extent looks weird.
>    
I agree with you on that...
Are you sure about the original shapefile projection? Does it have an 
attached *.prj file? If yes, then you should be able to run ogr2ogr 
*without* specifying the -s_srs.

I can't find in the EPSG database any projection with your parameters. 
Is it some special CRS?

> $ ogr2ogr -t_srs EPSG:4326 -s_srs  '+proj=lcc +lat_1=40.66666666
> +lat_2=43.333333333 +lat_0=41 lon_0=34.0 +x_0=1000000 +y_0=0
> +datum=wgs84 spheroid=wgs84 +units=m' geohidro_cizgi_adf2.shp
> hidro_cizgi_adf.shp
> orkun at orkun-desktop:~$
> orkun at orkun-desktop:~$
> orkun at orkun-desktop:~$ ogrinfo geohidro_cizgi_adf2.shp -al -summary
> INFO: Open of `geohidro_cizgi_adf2.shp'
>        using driver `ESRI Shapefile' successful.
>
> Layer name: geohidro_cizgi_adf2
> Geometry: Line String
> Feature Count: 4929
> Extent: (-28.672066, 75.100678) - (37.866883, 81.508631)  *****
> Layer SRS WKT:
> GEOGCS["GCS_WGS_1984",
>      DATUM["WGS_1984",
>          SPHEROID["WGS_1984",6378137,298.257223563]],
>      PRIMEM["Greenwich",0],
>      UNIT["Degree",0.017453292519943295]]
> UserId: Integer (10.0)
> FNODE_: Integer (10.0)
> TNODE_: Integer (10.0)
> LPOLY_: Integer (10.0)
> RPOLY_: Integer (10.0)
> LENGTH: Real (32.3)
> HIDRO_CIZG: Integer (10.0)
> HIDRO_CIZG: Integer (10.0)
> F_CODE: String (80.0)
> F_NAME: String (80.0)
> SYMBOL: Integer (10.0)
> DISPSCALE: Integer (10.0)
>
>
> 2009/12/16 Micha Silver<micha at arava.co.il>:
>    
>> ahmettemiz88 at gmail.com wrote:
>>
>>      
>>> hello
>>>
>>> I have difficulty changing map projection from lamber conical to
>>> geographic ?
>>>
>>> how can I do that ?
>>>
>>> here is the original map's metada:
>>>
>>> name: Lambert Conformal Conic
>>> proj: lcc
>>> datum: wgs84
>>> ellps: wgs84
>>> lat_1: 40.66666666666666
>>> lat_2: 43.33333333333334
>>> lat_0: 0
>>> lon_0: 34
>>> x_0: 1000000
>>> y_0: 0
>>> no_defs: defined
>>>
>>> I tried with ogr2ogr :
>>>
>>> ogr2ogr -t_srs '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs' -s_srs
>>> '+proj=lcc +lat_1=40.66666666 +lat_2=43.333333333 +lat_0=0 lon_0=34
>>> +x_0=1000000 +y_0=0 +datum=wgs84 +units=meter' geohidro_cizgi_adf94.shp
>>> hidro_cizgi_adf.shp
>>>
>>>
>>>        
>> I think you might be having trouble with the quoting. Maybe try with just
>> the EPSG code, i.e.:
>> ogr2ogr -t_srs EPSG:4326 geohidro_cizgi_adf94.shp hidro_cizgi_adf.shp
>>
>> --
>> Micha
>>      
>>> regards
>>>
>>> Ahmet Temiz
>>>
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>>>
>>>
>>>
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>>>        
>>
>>      
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