4 messages on various aspects of the DOQ problem.-----------Johnnie -------------------------------------------- [log in to unmask] (J Fieber) Re: DOQ Problem Wed, 1 Dec 93 16:30:19 EST Gwen Curtis <[log in to unmask]> writes: > GPO... I just discovered that a sample DOQ was distributed to depository > libraries called the "Olmsted County" project, Minnesota under Sudoc number > I 19.120:OL 5/CD. You might want to take a look at it before making your > selection. I've not had any luck getting mine to display yet, but we're > still working on it. I'd be interested in hearing if anyone has been able > to use theirs. The software that comes on the disk is pretty clunky to say the least. The best results I got with the packaged software was on a 486DX50 machine with a Diamond Stealth video card using the VESA display mode. Even that was a little buggy. I got somewhat better results on a sparcstation equipped with 64 meg of ram and 240 meg of swap and a 19" monitor. Most image display software tries to read the entire image into RAM before displaying it. That approach falls apart with the huge ( > 50 megabyte ) images on the DOQ disks. Short of an elaborate GIS package, I have not found a convenient solution for viewing them yet. (I have not looked too hard though...) If anyone has a solution, I'd like to know about it. MS-DOS and Mac solutions are preferred since those platforms are easier to come by but Unix/X11 solutions are certainly welcome. -john == John Fieber ================================== Young Science Library == == [log in to unmask] ======= Smith College, Northampton MA 01063 == ----------------------------------- Wed, 1 Dec 93 22:41+0000 RE: DOQ Problem [log in to unmask] This was my request on ACDGIS-L about the DOQ mentioned... I got a test disk from Reston but have also some problems to read it properly on my PCI-266 with V7 Mercury graphic board... Frank H. -- (request message included) ---------------------------------------------------------------------- P1-Message-Id: DE*D400*TU-DRESDEN;dfnserv-tud1003931201234105-K9R Date: Wed, 1 Dec 93 22:41+0000 X400-Trace: DE*D400*TU-DRESDEN; arrival Wed, 1 Dec 93 22:41+0000 action Relayed X400-Trace: de*d400*GmD; arrival Wed, 1 Dec 93 22:43+0000 action Relayed X400-Trace: de*d400*GMD; arrival Wed, 1 Dec 93 23:47+0100 action Relayed Reply-To: [log in to unmask], imagrs-l@csearn, [log in to unmask] Subject: DOQ-CD vom USGS Cc: imagrs-l@csearn To: Geographische Informationssysteme <ACDGIS-L@AWIIMC12> From: [log in to unmask] Message-Id: <931123233857*[log in to unmask]> Ich teste gerade die CD-ROM mit digitalen Orthophotos mit JPEG Kompressions- techniken vom USGS ("Olmsted County" Projekt)... es gibt da einige Nebeneffekte beim Ausf|hren der Kompressionsdemo... z.B. stuerzt nach dem Verlassen des Programms anschliessend die Windows-Oberflaeche zusammen und der Bildspeicher wird nicht mehr reaktiviert.... Das System laesst sich nicht mehr "warm" starten und es gibt nur noch die Radikalkur mit dem Hauptschalter. -- Hat jemand zufaellig diese Test-CD schon etwas naeher diagnostiziert ??? Oder ist das ggf. ein DOS/W31 - Problem....? MfG, F.Hoffmann --------------------------------------------------- [log in to unmask] Thu, 2 Dec 93 04:09:00 BST DOQ Comment Reply: Item #9398569 from [log in to unmask]@INet#on 93/11/30 at 11:40 Might it not make more sense for selective libraries to have the option of selecting CD-ROMS within a specific radius? The one-state provision might be a problem for states on or near a boundary (Dartmouth, St Louis, and Kansas City jump immediately to mind) --------------------------------------------------- [log in to unmask] Re: DOQ Problem Thu, 02 Dec 93 07:51:57 -0800 UCSB has got the doq to display, but it was quite a production. First Larry Carver used IMDISP (which is on the cd) but wasn't real pleased with what resulted. Then he tried it using a software called xv (very inexpensive - if I remember correctly it's $25 - have already promised Larry Cruse that I'll get the full info on that), and it took a workstation nearly 20 MINUTES to decompress and display the image (but the end result was good). Then he tried it on a DEC Alpha (another mini) and took about half as much time. I have a 2-page guide on using IMDISP since the manual carefully explains each command but doesn't tell you in what order to use those commands ... if you need, let me know. Mary Larsgaard ([log in to unmask])