Fwd: [mapserver-users] strange mapinfo layer

Alex Rice alex_rice at arc.to
Fri Jul 26 13:02:05 EDT 2002


Another update in this OGR problem. When I use MapInfo Pro to 
open this Eslocs.TAB file, it opens it and renders it OK, with 
points. It thinks it's mapinfo TAB format. If I use Mapinfo 
translator to convert the table to Shapefile, I get 
EsLocs_point.shp and ogrinfo correctly reports that this file has 
point geometry in it, using the Shapefile driver.

Summary: something in this Eslocs.TAB file makes OGR think it's a 
Shapefile, not a Mapinfo file. And it loses the point geometry in 
the process.

Begin forwarded message:

> From: Alex Rice <alex_rice at arc.to>
> Date: Thu Jul 25, 2002  06:03:35  PM US/Mountain
> To: Daniel Morissette <morissette at dmsolutions.ca>
> Cc: mapserver-users at lists.gis.umn.edu
> Subject: Re: [mapserver-users] strange mapinfo layer
> X-Mailer: Apple Mail (2.482)
>
>
> On Wednesday, July 24, 2002, at 05:23  PM, Daniel Morissette wrote:
>> Hummm... this is bad... even though a layer with no geometries is
>> useless to MapServer, it should not crash on it... this as a bug 
>> that we
>> should fix since objects with "NONE" geometries are a valid case 
>> coming
>> from MapInfo and other GIS formats.
>>
>> FYI I filed this in the MapServer bugzilla at
>>   http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=169
>
> Daniel, here is some more info. There is only one file I've found 
> that causes this behavior. It's supposed to be a Mapinfo .TAB 
> file & it IS supposed to have point geometry in it. However, 
> ogrinfo insists on opening it with the ESRI Shapefile driver! The 
> shapefile output from ogrinfo is:
>
> # ogrinfo Eslocs.TAB Eslocs | more
> INFO: Open of `Eslocs.TAB'
> using driver `ESRI Shapefile' successful.
>
> Layer name: Eslocs
> Geometry: None
> Feature Count: 83
> Layer SRS WKT:
> (unknown)
> NAME: String (40.0)
> ID: Integer (11.0)
> ADDRESS: String (40.0)
> PHONE: String (10.0)
> MAPADD: String (40.0)
> ...
>
> Let me know if you want a copy of these files Eslocs.*. Now I'm 
> going to try opening it in Mapinfo Pro and seeing if it thinks 
> it's a TAB file or something else.
>
> Thanks,
>
> Alex Rice, Software Developer
> Architectural Research Consultants, Inc.
> alex_rice at arc.to
> alrice at swcp.com
>
>
>
>




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