Andreas,<br><br>Could you first test your data with the latest version of GDAL? The latest Windows binaries can be obtained through the OSGeo4W installer.<br><br>In any case, I couldn't find any reference to DNC in the OGDI library, which is used by OGR to read VPF files.<br>
<br><div class="gmail_quote">On Tue, Apr 10, 2012 at 5:22 PM, Andreas Oxenstierna <span dir="ltr"><<a href="mailto:ao@t-kartor.se">ao@t-kartor.se</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I cannot make OGR work with VPF DNC data.<br>
ogrinfo and ogr2ogr crashes when trying to read data from any level inside the VPF structure. DHT and LAT files do exist.<br>
OGR does work for standard VMAP0 and VMAP1 data.<br>
Is this a known limitation?<br>
Does DNC require some special syntax?<br>
I have used e.g. ogrinfo gltp:/vrf/C:\xxx and ogrinfo gltp:/vrf/C:/xxx<br>
<br>
Tested version:<br>
1.7.0b2 as included in FWTools 2.4.7 on Windows<br>
<br>
I noted that only FME seems to be able to always correctly read the DNC data we have available. For example vpfview, nimamuse and ArcGIS do have various issues.<br>
<br>
Best Regards<span class="HOEnZb"><font color="#888888"><br>
<br>
-- <br>
Andreas Oxenstierna<br>
T-Kartan Produkt AB<br>
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<br>
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</font></span></blockquote></div><br><br clear="all"><br>-- <br>Best regards,<br>Chaitanya kumar CH.<br><br>+91-9494447584<br>17.2416N 80.1426E<br>