Drawing TIGER file Polygons

[Shashi Gireddy]

Hi Chris,

I am working on Alabama census, I downloaded SF1 shape files from esri
downloads http://www.esri.com/data/download/census2000_tigerline/
and modified the backed data with ArcView (or ArcMap of ArcGIS). ESRI
provides only SF1 data(initially I did it manually when I don't know
that I can edit and add external data), but you can create SF3 tabkes
and map them back onto shape files although its alot manual work.

hope this will work,

thank you,





On 4/22/05, Chris Hackel <cvhackel at yahoo.com> wrote:
> Frank--Thanks very much for the lead.
> Is there a better (freely available) data source for
> me to use? One that would make the process simpler?
> I'm completely new to this and the Census TIGER files
> were the only option I found.
> 
> 
> --- Frank Warmerdam <fwarmerdam at gmail.com> wrote:
> > On 4/22/05, Chris Hackel <cvhackel at yahoo.com> wrote:
> > > How does one extract polygon data from TIGER files
> > in
> > > a directory? I can't find any good documentation
> > and
> > > the only reference I have is the snippet below.
> > > I understand the script for the most part, but
> > this is
> > > coming from a database, whereas I just have a
> > > directory with the RT1, RT2, RT3.. etc files in
> > it.
> >
> > Chris,
> >
> > The GDAL source distribution includes a tigerpoly.py
> > script
> > that will form polygons from tiger data.  Basically
> > the issue with
> > TIGER data via OGR is that OGR gives a very literal
> > view of the
> > tiger data and you need to form the polygons
> > yourself.
> >
> >
> >
> http://www.gdal.org/srctree/pymod/samples/tigerpoly.py
> >
> > I understand Schyuler (author of Mapping Hacks:
> > http://mappinghacks.com)
> > has also written a similar script that loads the
> > data into PostGIS and
> > does some additinoal transformations on it.
> >
> > Best regards,
> > --
> >
> ---------------------------------------+--------------------------------------
> > I set the clouds in motion - turn up   | Frank
> > Warmerdam, warmerdam at pobox.com
> > light and sound - activate the windows |
> > http://pobox.com/~warmerdam
> > and watch the world go round - Rush    | Geospatial
> > Programmer for Rent
> >
> 


-- 
Shashi Kiran Reddy. Gireddy,
Graduate Assistant,
CBER, University of Alabama.
http://www.cs.ua.edu/shashi
Home: 205-752-5137 Cell: 205-657-1438