[Qgis-user] projection change

[ahmettemiz88 at gmail.com]

thank you again


Original map is in *adf format it's metadata like this:

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 save it as shp fie in QGIS.

then I am trying to convert it lat/long with ogr2ogr as:

ogr2ogr -t_srs EPSG:4326 -s_srs '+proj=lcc +lat_1=40.66666666  
+lat_2=43.333333333 +lat_0=0 lon_0=34.0 +x_0=1000000 +y_0=0 +datum=wgs84  
+spheroid=wgs84 +units=m +no_defs' geohidro_cizgi_adf2.shp  
hidro_cizgi_adf.shp

17 Ara 2009 12:50 tarihinde, Micha Silver <micha at arava.co.il> şunu yazdı:
> 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 Silvermicha 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, ie:

> ogr2ogr -t_srs EPSG:4326 geohidro_cizgi_adf94.shp hidro_cizgi_adf.shp



> --

> Micha




> regards



> Ahmet Temiz



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