Maptitude - http://research.umbc.edu/~roswell/maptitude.html
I'd take it in either of two ways, a dbf file with
Zip code neighbor centroid dist boundary length
98105 98106 3.2 5.5
98105 98107 1.2 8.1
98105 98108 3.1 .56
98105 98109 .8 1.7
98105 98111 1.1 4.2
or the transpose of this as a horizontal record
98105 98106 3.2 5.5 98106 3.2 5.5 98108 3.1 .56 98108 3.1 .56 etc.
I can tell you that ALL folks who do spatial stats need this info. If you
cannot enumerate nearest neighbors, then you can't so squat with spatial
stats.
other things I need?
The second level nearest neighbors. These are polygons that border the 1sr
order nearest neighbors and are interior to the original polygon. I had a
topology course decades ago, so my terminology may be off.
Richard Hoskins
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-----Original Message-----
From: Larry Manire [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 09, 2001 1:44 PM
To: Maptitude
Subject: RE: [Maptitude] redraw dbox-->utility dbox
Maptitude - http://research.umbc.edu/~roswell/maptitude.html
Hi Richard,
1.
>I want a utility that will tell me what the adjacent polygons are for a
>polygon. For example, for Zip Code 98105, what are the Zips that share a
>boundary. And if it would be nice to know the distance between centroids
and
>the lengths of the shared boundaries (and a few dozen other things ...)
>>This is in TransCad and essential for stuff I do. Right now I have to use
>that scourge of GIS ... AV to get that info because someone out there wrote
>an Avenue script to do it.
This falls in the relatively easy category depending upon where we put the
output. If I compute the distances from the selected poly to the adjacent
ones and the shared boundary lengths, where do I put them, in a scroll list,
array, dbf? Also what are the "few dozen other things."
>2. It would be nice to be able to set the default directory in Mapt. Not
>clear they are going to do that in 4.5. One always starts in the Mapt
>directory and so on. A pain.
Not sure we have control over this...will check with Caliper on how to do
it.
>3. It would be nice to be able to save the settings for thematic maps in a
>template (like MapInfo) allows. As it is, one needs to go through the whole
>process of selecting color palette, ranges, etc for every map one makes.
Well, I've already done this as part of a "theme wizard" in iSite
(www.geonomicsinc.com). It understands the iSite layers, walks you through
creating themes and allows you to save them to a .txt file and reload them
anytime. Unfortunately it was a a huge amount of work to to write, and
would be quite a bit of work to make it generic, and, in any case, Geonomics
owns the code. I think we'll probably have to wait for Caliper on this one.
Larry Manire
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