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Re: Shapelib Digest, Vol 47, Issue 4
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Re: Shapelib Digest, Vol 47, Issue 4
by vdp09
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Hi There,
Were able to figure out this problem? I am having the same problem Thanks, Vikas
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Shapefile testing / standards
by Ken S. Elvehjem
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Hi,
I've been using shapelib (by way of compiling the executables) for years now, and we've been fairly happy together. These shapefiles are produced in sets: a Polygon for an agricultural field boundary, a "samples" or Point shapefile for sample locations, and optionally an Arc set for line data. Just recently, I have encountered a problem where the ArcExplorer program "likes" my shapefiles just fine, but some other "commercial packages" will not read the "Arc" shape, claiming a problem w/ the .dbf file. Is there someone on the list who is good at shapefiles and is willing to look at a couple of examples? I generally just need a kick in the right direction;>) Sincerely, Ken Ken S. Elvehjem ELVEHJEM TECHNICAL SUPPORT 250 Drury Ave PO Box 37 Lowry MN 56349 320.283.5684 320.283.5247 h 320.424.1299 c ----- Original Message ----- From: "vdp09" <vdp09@...> To: <shapelib@...> Sent: Monday, March 30, 2009 6:49 PM Subject: Re: [Shapelib] Shapelib Digest, Vol 47, Issue 4 > > Hi There, > > Were able to figure out this problem? I am having the same problem > > Thanks, > > Vikas > > > > Barry Kronenfeld wrote: >> >> Tom, >> >> You're right, I did change to a newer computer which has 64-bit >> architecture... How would this cause a problem? >> >> Barry >> >>> Barry, did you only change the operation system or did you also >>> change >>> the underlying hardware from 32 bit to 64 bit architecture? Maybe >>> this >>> could be an issue? >>> >>> Regards, >>> Tom >>> >>> Barry Kronenfeld schrieb: >>> > I think I have had the same problem as Ian. I used ShapeLib in >>> VB 6.0 for years using Windows XP without any problems. Recently >>> I "upgraded" to Windows Vista and since then I've also encountered >>> a fatal error whenever I tried to invoke the >>> DBFReadStringAttribute function. I don't program in C so I don't >>> know what is going on underneath, but I suspect it is the same. >>> > >>> > - Barry >>> > ______________ >>> > >>> > Barry Kronenfeld >>> > Assistant Professor >>> > Department of Geography >>> > George Mason University >>> > bkronenf@... >>> > >>> > >>> >> Send Shapelib mailing list submissions to >>> >> shapelib@... >>> >> >>> >> To subscribe or unsubscribe via the World Wide Web, visit >>> >> http://lists.maptools.org/mailman/listinfo/shapelib >>> >> or, via email, send a message with subject or body 'help' to >>> >> shapelib-request@... >>> >> >>> >> You can reach the person managing the list at >>> >> shapelib-owner@... >>> >> >>> >> When replying, please edit your Subject line so it is more specific >>> >> than "Re: Contents of Shapelib digest..." >>> >> >>> >> >>> >> Today's Topics: >>> >> >>> >> 1. Re: DBFReadStringAttribute broken? (Ian Wright) >>> >> >>> >> >>> >> ---------------------------------------------------------------- >>> --- >>> >> --- >>> >> >>> >> Message: 1 >>> >> Date: Thu, 20 Mar 2008 16:05:15 +0000 >>> >> From: Ian Wright <ianw@...> >>> >> Subject: Re: [Shapelib] DBFReadStringAttribute broken? >>> >> To: Shapelib Development <shapelib@...> >>> >> Message-ID: <47E28B3B.3050809@...> >>> >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed >>> >> >>> >> Frank, >>> >> >>> >> Thanks for the reply. I have actually downloaded and tested >>> that >>> >> version >>> >> now and the same problem >>> >> arises when using the lib/dll. I used the makefile to generate >>> >> these and >>> >> then tried replacing the ones that >>> >> I was currently using, and it has exactly the same problem. >>> >> >>> >> So I tried including just the shapefil.h and dbfopen.c files as >>> >> they >>> >> were the only functions that I was >>> >> interested in within the project and thought stepping into >>> these >>> >> functions would help identify the >>> >> problem, however it ran fine right to the end. I've tried it a >>> >> couple of >>> >> times and as yet haven't had >>> >> the same problem or any corruption of variables whatsoever when >>> >> running >>> >> it just from those source >>> >> files. >>> >> >>> >> I'm not sure exactly what that suggests. Now that I've got it >>> >> working in >>> >> windows also I'm planning >>> >> not to use the DLL etc. and stick with what works for now, so >>> I'm >>> >> guessing if there haven't been >>> >> any other reported problems then it may not be worth worrying >>> about?>> >>> >> If you do want to investigate further and theres anything I can >>> be >>> >> assistance of then let me know. >>> >> >>> >> Ian >>> >> >>> >>> Ian, >>> >>> >>> >>> I don't see why this is happening. I would however suggest >>> you >>> >>> >>> >> update >>> >> >>> >>> to the >>> >>> current shapelib code. There is code that is likely more >>> recent in: >>> >>> >>> >>> http://download.osgeo.org/shapelib/shapelib_1_2_10.zip >>> >>> >>> >>> However, I have also taken the liberty of packaging the latest >>> >>> development >>> >>> code and posting it as: >>> >>> >>> >>> http://download.osgeo.org/shapelib/shapelib-1.3.0a1.zip >>> >>> >>> >>> Try with updated code and see if the problem persists. If it >>> >>> >>> >> does, >>> >> >>> >>> then you >>> >>> should learn to use your debugger, build the dbfopen.c code >>> with >>> >>> debug, and >>> >>> step through the time "i" becomes corrupted to see what is >>> going on. >>> >>> >>> >>> Best regards, >>> >>> >>> >> -- >>> >> *Ian Wright* >>> >> /Software Developer >>> >> ianw@... / >>> >> >>> >> * Graticule <http://www.graticule.com> >>> >> * 01132 344000 >>> >> >>> >> >>> >> >>> >> ------------------------------ >>> >> >>> >> _______________________________________________ >>> >> Shapelib mailing list >>> >> Shapelib@... >>> >> http://lists.maptools.org/mailman/listinfo/shapelib >>> >> >>> >> >>> >> End of Shapelib Digest, Vol 47, Issue 3 >>> >> *************************************** >>> >> >>> >> >>> > _______________________________________________ >>> > Shapelib mailing list >>> > Shapelib@... >>> > http://lists.maptools.org/mailman/listinfo/shapelib >>> > >>> > >>> >>> >>> >>> ------------------------------ >>> >>> _______________________________________________ >>> Shapelib mailing list >>> Shapelib@... >>> http://lists.maptools.org/mailman/listinfo/shapelib >>> >>> >>> End of Shapelib Digest, Vol 47, Issue 4 >>> *************************************** >>> >> _______________________________________________ >> Shapelib mailing list >> Shapelib@... >> http://lists.maptools.org/mailman/listinfo/shapelib >> >> > > -- > View this message in context: > http://www.nabble.com/Re%3A-Shapelib-Digest%2C-Vol-47%2C-Issue-4-tp16229067p22794000.html > Sent from the ShapeLib mailing list archive at Nabble.com. > > _______________________________________________ > Shapelib mailing list > Shapelib@... > http://lists.maptools.org/mailman/listinfo/shapelib _______________________________________________ Shapelib mailing list Shapelib@... http://lists.maptools.org/mailman/listinfo/shapelib |
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