rcw@scicom.AlphaCDC.COM (Robert White) (09/09/89)
+----------------------------------------------------------------+ | GIS AND DIGITAL CARTOGRAPHY NEWSLETTER Vol 1 Issue 1 | | Friday, Sep 8,1989 | +----------------------------------------------------------------+ | Submissions for the newsletter should be sent clearly labeled | | with the submitters name, organization, and usenet address to: | | ncar!boulder!qetzal!gis-letter or rcw@scicom.alphacdc.com | +----------------------------------------------------------------+ ****1**** From: Robert White [rcw@scicom.alphacdc.com] Subject: Welcome The response to my posting in comp.graphics overwhelmed me, so it it appears that this show is on the road. The newsletter will be posted to comp.graphics and sci.misc (unless you can suggest better alternatives) until such time as we are able to get our own group. The content of this letter is of course up to you. Several of you wrote to say that you had particular areas of expertise. I would encourage you to submit pieces as soon as you can. Some of the areas of interest that have arisen already include contour mapping, digital terrain models from USGS data, DLG-3 files, Arc/Info, import and export of data, remote sensing, Spot Imagery, and AutoCAD mapping applications to name a few. If you do not have regular access to usenet, please drop me a note and I can arrange to transmit the letter to you via the mail system. I may need someone to help me out in this regard if it becomes too cumbersome. Also, please make sure that I have a uucp path for you from the nearest backbone. As regards reader submitted public domain programs, I would like to establish an archive site, but do not have the resources to do so. If you do, please contact me or tell me a reasonable way in which such code might be distributed. If they are short, we can simply tack them on to the newsletter. ****2**** From: Eric Fielding [fielding@geology.tn.cornell.edu] Subject: GIS Newsletter Organization [Cornell University, Department of Geology] I would be very interested in a newsletter on GIS, etc. We have been doing computer mapping for several years and just ordered ARC/INFO. I have a hard time finding time to wade thru "comp.graphics" to find the few articles of interest. We also work with digital topography and satellite imagery; would those be included? [yes -ed] ****3**** From: Rich Thomson [thomson@cs.utah.edu] Subject: GIS Newsletter I am very much interested in GIS systems and I think a newsletter is a good way to start. If there is a lot of traffic on the newsletter, one can always bring up the possibility of turning it into a newsgroup. I also second your idea of posting the newsletter to a newsgroup as well. I manage a couple of newsletters (amiga-forth and sci-vis) and publishing them in the newsgroups increases the circulation to reach people who aren't aware of newsletters/mailing lists on the net. ****4**** From: Brett R. Prochaska [brettp@orca.wv.tek.com] Subject: GIS Newsletter [brettp@cain.WV.TEK.COM] Organization [Tektronix, Inc. Wilsonville, OR] I'd be interested in such a newsletter -- a central point for obtaining information pertaining to GIS systems would be very helpful. ****5**** From: Chris Hermansen [tacitus!clh@wimsey.bc.ca] Subject: GIS Newsletter [van-bc!tacitus!clh] Organization: Timberline Forest Inventory Consultants, Vancouver BC Gee, it's about time someone stood up on his/her hind legs for us GIS-ers! Sure, we're interested. We have ARC/INFO here and GeoVision AMS in Malaysia. Let me know if you need some help. [thanks, you're hired -ed] ****6**** From: Hardy Pottinger [hjp@umree.ee.umr.edu] Subject: GIS Newsletter [C0546@UMRVMB.bitnet] Organization: EE Dept., Univ. of Mo.-Rolla I'd be interested and I'm sure others as well. I don't know if the folks out at USGS (here in Rolla) are on the net, but I'll pass the word along. (USGS * US Geological Survey, mid continent mapping div.) ****7**** From: Robert White [rcw@scicom.alphacdc.com] Subject: Common Boundary Problem [ncar!boulder!qetzal!rcw] Organization: Mentor Software, Inc. Have you ever tried to digitize a county line or a region that shares its boundary with a river? I attempted to use AutoCAD and Microstation and even some programming techniques for what I thought was going to be a small project. All CAD approaches failed and object snapping to 5,000 separate points is no fun. I finally found a good solution using Atlas Draw. This program uses single precision floating point, but that was sufficient for my application. I was able to point to a line segment and use the "common" command to indicate the shared boundary to create both regions and/or a shared segment. If there is more than one possible shared boundary, you can toggle between them. How does Arc/Info manage this situation? -30-