[Xastir] xastir install on White Box Enterprise Linux

Tom Russo russo at bogoflux.losalamos.nm.us
Wed Jul 7 15:43:45 EDT 2004


On Wed, Jul 07, 2004 at 11:49:40AM -0700, a Mr. Richard Feyler of Fort Lee, New Jersey <archer at eskimo.com> writes 'Dear Rosanne Rosannadanna':
> On Wed, 7 Jul 2004, Bruce, KQ4TV wrote:
> 
> > Thanks. That's much better. Now to read up on dbfawk to see if I can
> > change the color of US highways and fill in the lakes without
> > obliterating islands in the lakes.
> 
> Actually as I recall the tool used to convert the Tiger/Line data to
> Shapefiles didn't have polygon capability, so you have no lakes.
> You might try using a steel blue background to see if you can
> simulate it.

Yes, that's right.  The conversion from TIGER/Line to ESRI Shapefile was done
with ogr2ogr, and because the TIGER/Line data doesn't actually have the lakes
encoded as polygons directly, ogr2ogr can't catch that.  To do a proper
conversion with areas encoded as polygons would require a tool that understands
the way TIGER/Line data stores the link between polygon centers and polylines.
I believe someone was looking into it, but I've heard nothing since a few 
days after the initial conversion was completed.

If you really want filled lakes, then an easier way to get it than relying
on TIGER data is to go to the national atlas and get the file 
hydrogm020.tar.gz, get the hydrogp020.{shp,shx,dbf} files out of that tarball,
then pull the related dbfawk file off of my web site 
(http://www.swcp.com/~russo/shape_web/).  This has all of the lakes, bays,
straits, and reservoirs in the US encoded as polygons in ESRI Shapefile
format already.  There is a second set of files in the tarball 
(hydrogl020.{shp,shx,dbf}) of linear water features (rivers, streams, etc.), 
but they're just the shorlines as polylines --- you won't get filled rivers no 
matter what you try.

The national atlas (www.nationalatlas.gov) is a great source for shapefile
maps.  

HTH,
T.

-- 
Tom Russo    KM5VY     SAR502  DM64ux         http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236 AHTB#1 http://www.qsl.net/~km5vy/
 "One man alone can be pretty dumb sometimes, but for real bona fide
 stupidity, there ain't nothin' can beat teamwork." - Edward Abbey



More information about the Xastir mailing list