[Freegis-list] VMAP0/Eurnasia -> SHAPE problems (OGR/OGDI driver)

[John Reid]

Markus,

By your comment "after some tricks it works now" I assume you have 
managed to get the failed 72 maps working?  Where did you source your 
VMAP0 data from?

John

Markus Neteler wrote:

>John,
>(cc FreeGIS)
>
>On Fri, Jun 06, 2003 at 12:03:15PM +1000, John Reid wrote:
>  
>
>>Markus,
>>
>>Out of curiosity, did the VMAP0 datasources for the 72 maps that failed 
>>to report any features use the tiled VPF data structure?  And the maps 
>>that did work had their features untiled?  Sorry for my atrocious 
>>terminology - been a while since I looked at this.
>>    
>>
>
>Good question - how to find out? I only downloaded the file from NIMA
>and tried to use it. Well, after some tricks it works now, enjoy the new
>mapserver:
>
>http://mpa.itc.it/markus/mapserver/ 
>(the site may be a bit overloaded)
> 
>  
>
>>The other problem I experienced with VPF data was that  some VPF 
>>datasets do not conform to the published specification.  I know I had to 
>>rename a few directories to get the Global 1M dataset for Australia 
>>working.  If you need more details, please contact me and I will find my 
>>notes on the problem.
>>    
>>
>
>Yes, you have to rename all files with trailing period (delete this period).
>Only then the OGR/OGDI driver works...
>
>Then I have the impression that the OGR/OGDI driver does not work over NFS.
>
>Cheers
>
> Markus
>
>
>  
>
>>Markus Neteler wrote:
>>
>>    
>>
>>>Dear list members,
>>>
>>>[I already posted on GDAL-dev, sorry for crossposting - now I try here]
>>>
>>>did anyone (successfully) manage to convert VMAP0/Eurnasia
>>>to SHAPE format (or some other widely used GIS format supported
>>>by OGR)?
>>>
>>>I have compiled the OGDI-3.1.1 driver on Redhat Linux (a few
>>>Makefile changes were required), then compiled OGR with
>>>OGDI support (CVS version of GDAL/OGR).
>>>
>>>The 'ogrinfo' works well, but only reports features for 4 maps 
>>>of 76 maps:
>>>
>>>For
>>>- 72 maps is reported that they contain 0 features
>>>-  4 maps contain this number of features:
>>>    Feature Count: 1424 - libref at libref(*)_line
>>>    Feature Count: 28   - tileref at tileref(*)_area
>>>    Feature Count: 107  - libreft at libref(*)_text
>>>    Feature Count: 28   - tilereft at tileref(*)_text
>>>
>>>      
>>>
>>>From libref at libref(*)_line I was able to generate a SHAPE file.
>>    
>>
>>>Commands like:
>>>ogr2ogr watrcrsl.shp \
>>>  gltp:/vrf/levi0/ssi/BIO/vectordata/vmap0_europe/v0eur/vmaplv0/eurnasia \
>>>  'watrcrsl at hydro(*)_line'
>>>
>>>produced feature-empty, but correct SHAPE files (as no features found).
>>>I tried this approach with all 76 maps.
>>>
>>>The VMAP0/Eurnasia data set requires 750 MB of disk space. So I am
>>>obviously missing something.
>>>
>>>Hints are welcome,
>>>thanks in advance
>>>
>>> Markus Neteler
>>>      
>>>
>
>  
>


-- 
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john reid                                    e-mail: jgreid at uow.edu.au
technical officer                               building 41, room G03A 
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university of wollongong                         fax: +61 02 4221 4250
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