Fixing undershoots and overshoots for lines seems like one of the most
common and relatively easy to implement features that a GIS should have.
Can it be that we have overlooked this, or is it a JCS feature that hasn't
been ported over yet?
Larry
On Thu, Jun 12, 2008 at 9:52 AM, Sunburned Surveyor <
[EMAIL PROTECTED]> wrote:
> ---------- Forwarded message ----------
> From: Assessor <[EMAIL PROTECTED]>
> Date: Thu, Jun 12, 2008 at 5:24 AM
> Subject: OpenJUMP question
> To: [EMAIL PROTECTED]
>
>
> Sir:
>
>
>
> I am neither a computer nor GIS expert, although I eventually can
> figure out how to solve problems with computers; sometimes the long
> way around.
>
>
>
> PROBLEM: We draw all our maps in AUTOCAD. We have a fairly good
> "street map" which is based on our "tax map". The Tax map is really a
> collection of about 125 sheets comprising 10,000 parcels, varying
> scales, etc.
>
>
>
> We edge matched them and produced the street map as one layer but
> don't know how (or AUTOCAD won't let us) export it as a polygon
> shapefile. As it stands now, it comes out as a "line" shapefile. The
> last edition of the map was sent to a consultant who converted it to a
> "polygon" shapefile, probably using an ESRI product. That costs money
> that we don't have, and we want to do it a couple times per year. We
> use the Map with a database that is used for almost everything that I
> do as well as many other departments also.
>
>
>
> Once we get the base layer (polygons) we can do all kinds of GIS stuff
> with it, but we don't have a way to solve the only apparent problem
> that I think we have; namely: fixing overshoots and undershoots.
>
>
>
> No matter how good our line work is in AUTOCAD, when it comes out as a
> line shapefile, there are thousands (like about 18,000) over or
> undershoots. I have figured out how to fix the overshoots in OpenJUMP
> by using the "nodeline" tool, but I don't see how to fix undershoots.
> The "polygonize" tool works great, but it needs "closed polygons." If
> I could fix the undershoots, even by making them into overshoots, I'd
> be fine. I know ARC has "clean" and "Nodesnap" and tools that make
> what I want to do easy. The question is: can this be done with
> OpenJUMP or one of its plugins? If so, can you advise? I have been
> digging around on the web for days!
>
>
>
> Sorry for the long email, but I figured more info is better than less.
>
>
>
> Thanks.
>
>
>
> Township of Voorhees
>
>
>
>
>
> Michael C. Kane - Municipal Assessor
>
> [EMAIL PROTECTED]
>
> www.voorhees-nj.com
>
> 620 Haddonfield-Berlin Rd.
>
> Voorhees, NJ 08043
>
>
>
> 856-429-7767 (V)
>
> 856-429-5756 (F)
>
>
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