From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,2cfb9497fbc094e5 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-09-05 20:16:37 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!news-out.visi.com!hermes.visi.com!newsfeed1.earthlink.net!newsfeed.earthlink.net!stamper.news.pas.earthlink.net!newsread1.prod.itd.earthlink.net.POSTED!not-for-mail From: "Eric G. Miller" Subject: Re: Recommendations:GIS program in Ada Newsgroups: comp.lang.ada Message-ID: References: User-Agent: Pan/0.12.1 (The din of other people) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Comment-To: "Bill Tate" Date: Fri, 06 Sep 2002 03:16:00 GMT NNTP-Posting-Host: 216.119.12.4 X-Complaints-To: abuse@earthlink.net X-Trace: newsread1.prod.itd.earthlink.net 1031282160 216.119.12.4 (Thu, 05 Sep 2002 20:16:00 PDT) NNTP-Posting-Date: Thu, 05 Sep 2002 20:16:00 PDT Organization: EarthLink Inc. -- http://www.EarthLink.net Xref: archiver1.google.com comp.lang.ada:28755 Date: 2002-09-06T03:16:00+00:00 List-Id: In , Bill Tate wrote: > I've been looking for any excuse to build an application in Ada - > specifically a GIS program with a business analysis focus (the > commercial alternatives are expensive, do not fit my particular needs > & they are not written in Ada - the latter being a non-starter with me > anyway). Why would you care if the software was written in Ada? It's not likely any of the vendors would give you access to their source anyway. > In reviewing available packages, I'm curious as to whether anyone has > any thoughts on the suitability of using GtkAda for the graphical user > interface? It could probably do the task... > As far as I can determine thus far, the GtkAda.Canvas package offers > some nice features already built-in and the overall GtkAda package > appears to be quite comprehensive. My preference is avoid going the > OpenGL route if at all possible. You probably wouldn't want to use a Canvas widget; Or at least, if you did, you'd probably want to draw to a bitmap buffer and only use the canvas functionality for selections and editing type work and possibly for dividing up the frame for layouts. Trying to keep all that data + overhead in memory would kill your program. > If anyone has any thoughts, recommendation and/or reservations, etc., > I would greatly welcome any feedback. Thanks in advance, Good Luck. GIS's are fairly complex creatures. BTW: what "business analyst" functionality are you looking for that commercial vendors are not providing?