[GRASS-user] E00 import problem

[Richard Chirgwin]

Markus,

As always, thanks!

Richard

Markus Neteler wrote:
> Richard,
>
> downloaded and tested:
>
> # uncompress
> e00conv dnnet.e00 24647.e00
>
> # convert
> avcimport 24647.e00 dnnet
>
> # look at metadata:
> ogrinfo -so dnnet arc
> Had to open data source read-only.
> INFO: Open of `dnnet'
>       using driver `AVCBin' successful.
>
> Layer name: ARC
> Geometry: Line String
> Feature Count: 59798
> Extent: (-4774718.500000, 7619798.000000) - (-1109733.750000, 10478012.000000)
> Layer SRS WKT:
> PROJCS["unnamed",
>     GEOGCS["Unknown datum based upon the Clarke 1866 ellipsoid",
>         DATUM["Not_specified_based_on_Clarke_1866_ellipsoid",
>             SPHEROID["Clarke 1866",6378206.4,294.9786982139006,
>                 AUTHORITY["EPSG","7008"]],
>             AUTHORITY["EPSG","6008"]],
>         PRIMEM["Greenwich",0,
>             AUTHORITY["EPSG","8901"]],
>         UNIT["degree",0.01745329251994328,
>             AUTHORITY["EPSG","9122"]],
>         AUTHORITY["EPSG","4008"]],
>     PROJECTION["Lambert_Conformal_Conic_2SP"],
>     PARAMETER["standard_parallel_1",70],
>     PARAMETER["standard_parallel_2",50],
>     PARAMETER["latitude_of_origin",0],
>     PARAMETER["central_meridian",110],
>     PARAMETER["false_easting",0],
>     PARAMETER["false_northing",0],
>     UNIT["METERS",1]]
> UserId: Integer (0.0)
> FNODE_: Integer (0.0)
> TNODE_: Integer (0.0)
> LPOLY_: Integer (0.0)
> RPOLY_: Integer (0.0)
> LENGTH: Real (12.3)
> DNNET#: Integer (5.0)
> DNNET-ID: Integer (5.0)
> DNLNTYPE: Integer (2.0)
> DNLNSTAT: Integer (2.0)
>
>
>  http://www.maproom.psu.edu/cgi-bin/dcw/dcwarea.cgi?Asia
> states
> Projection information for Russia
>     Projection	LAMBERT
>     Units	METERS
>     Spheroid	CLARKE1866
>
> So you cannot import this into a LatLong location but need to
> create a Lambert projected location.
>
> The metadata in the uncompressed E00 file contain:
> PRJ  2
> Projection    LAMBERT
> Zunits        NO
> Units         METERS
> Spheroid      CLARKE1866
> Xshift        0.0000000000
> Yshift        0.0000000000
> Parameters
>  70  0  0.000 /* 1st standard parallel
>  50  0  0.000 /* 2nd standard parallel
>  110  0  0.000 /* central meridian
>  0  0  0.000 /* latitude of projection's origin
> 0.00000 /* false easting (meters)
> 0.00000 /* false northing (meters)
>
> With the Location manager, you will be able to define it.
> The v.in.e00 will work as expected.
>
> Markus
>
>