[Qgis-user] Can QGIS plot single line segments?

[Tim Keitt]

I have what I think is a perfectly good shape file. ogrinfo returns

NFO: Open of `jagmesh.shp'
      using driver `ESRI Shapefile' successful.

Layer name: jagmesh
Geometry: Line String
Feature Count: 19047
Extent: (-3547484.000000, -5785886.000000) - (4866967.000000, 3747255.000000)
Layer SRS WKT:
PROJCS["Lambert_Azimuthal_Equal_Area",
    GEOGCS["unnamed ellipse",
        DATUM["unknown",
            SPHEROID["Unknown",6370997,0]],
        PRIMEM["Greenwich",0],
        UNIT["Degree",0.017453292519943295]],
    PROJECTION["Lambert_Azimuthal_Equal_Area"],
    PARAMETER["latitude_of_center",0],
    PARAMETER["longitude_of_center",-80],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["Meter",1]]
is.edge.so: Real (11.0)
is.edge.ta: Real (11.0)

I loaded it into postgis. The first 5 lines are:

 gid |                                      astext
-----+-----------------------------------------------------------------------------------
   1 | LINESTRING(-118068.9 -658036.18355628,-118068.9 -658036.18355628)
   2 | LINESTRING(-120565.103973043 -652437.1,-120565.103973043 -652437.1)
   3 | LINESTRING(-108926.6 -648353.4,-108926.6 -648353.4)
   4 | LINESTRING(3666461.07939581 -119248.798562935,3666461.07939581
-119248.798562935)
   5 | LINESTRING(3636409.07468477 -129061.988213268,3636409.07468477
-129061.988213268)
(5 rows)

Neither the shapefile or the postgis table will display in QGIS. QGIS
clearly digests the data and looks like it wants to draw something,
but the plot is blank.

THK

-- 
Timothy H. Keitt
http://www.keittlab.org/