[Talk-us] NHD: python or java?

[Sam Vekemans]

On Fri, Aug 7, 2009 at 1:05 AM, Dale Puch <dale.puch at gmail.com> wrote:

> On Fri, Aug 7, 2009 at 1:29 AM, David Carmean<dlc at halibut.com> wrote:
> >
> > Which tool is most used, at the moment, for importing NHD data?  Chris's
> python stuff
> > or Ian's java stuff? :)
> >
> > For those using Ian's stuff, who's developed the most complete rules
> file?
> >
> >
> >
> >
> >
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>
> I got the impression that Chris's python is tailored made for the NHD
> where Ian's java is geared towards making generic shape imports a lot
> easier for the novice or non programmer.
>

Exactly, the java version, is really best for manual importing of the data,
and the python is for when your using bulk_upload.py script.  For when you
dont need to mess with what is already existing. ie. in many areas, were
there are no rivers / waterbodies to conflict with, a full upload is fine.
But for this canvec stuff i'm working with (importing rail-lines,
powerlines, sport_park_fields etc, i need to watch for what other have
done).  So bulk_uploading the data wont help. (ie. importing rivers in the
middle of a city, where other mappers might have done just parts of the
river. (perhaps in more detail than the import data available)

I recommend maintaining just 1 version of the data for each script, with a
comparision chart (like i have with the Google Docs chart), as they both
need to have all the same tag-matches, and just keep track of the script
version.

How are you keeping track of the National Dataset?
For Canada, Im thinking at using a GoogleDocs spreadsheet might be easier,
since there are so many different tiles (canada is made up of an NTS Grid of
only 4,984 unique tiles) where some will be uploaded at different levels of
completness... and different levels of data available.  So i have a chart
with all the types of data..  then what i can do is give access to it for
whoever wants it.
http://spreadsheets.google.com/pub?key=tmY7V02fBT8C8vimCf8ioXg&output=html


Hope that helps,
Sam


>
> --
> Dale Puch
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