[GRASSLIST:4118] Help: Tiger/Line to Geotiff?

[Leonard Budney]

Hello,

I'm trying to convert Tiger/Line data into street maps in geotiff 
format. The two main things I still can't do are: label the roads; 
produce the geotiff output.

I've followed the tutorials at <http://tinyurl.com/5fbbu> and 
<http://tinyurl.com/5dh5w>, using Grass53, and have successfully 
displayed a single county's streets, railroads and streams on the 
screen, each in appropriate colors. The script I used to do that is 
attached.

I have also used v.in.ogr to import the Tiger/Line data, using the OGR 
layer name "CompleteChain", and it produced a map which appeared to 
show all the same features, but all lines were black.

When I use v.to.rast on any of my maps, the resulting raster map is 
blank except for a scattering of small multi-colored squares. This 
appears to be a necessary first step before generating geotiff, since 
there is no v.to.tiff command.

To generate labels I've tried several things: using awk to create a 
dig_cats file (as suggested on this mailing list in the archives); 
importing paint lables (from the same file with the header removed and 
the ":" converted to a single space) and then running d.paint.labels on 
it; and a random assortment of *.*label* commands. The closest I've 
come to (apparent) success was running d.paint.labels, which generated 
hundreds of errors of the form:

	Error: rotate: 4.462818
	Error: rotate: 302.660913
	Error: rotate: 340.559965

Is there any way to generate labeled road maps from the Tiger/Line data 
using Grass? What I'm hoping for is to produce a street map, preferably 
of an entire state (or sizable fraction thereof), with street names, in 
geotiff format, so I can use it in with my GPS software. (MacGPS uses 
pict format, so that would be spiffy too--but it can import geotiff 
without problems.)

Thanks!
Len.


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