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Some URIs that represent namespaces do not appear in Pubby Linked Data Frontend: there is just a question mark (?) sign where the namespace should be even though when you click on that URL it will take you to the right page.

I initially assumed that Pubby doesn't find the prefixes.ttl file, but in that case the link would have also not worked and I would have also seen an error (which I saw in other instances)... Obviously something else is causing this. Does anyone has any idea what is causing this?

paxRoman
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2 Answers2

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I had the same problem. It seems that the last version of pubby (0.3.3) does not use the prefixes defined inside the config.ttl file.

The solution is to use the config option conf:usePrefixesFrom <file.rdf>;

But, take care. It seems that you can not link to a file (despite its signature) but only to a URL. For instance:

conf:usePrefixesFrom <http://www.csee.umbc.edu/~finin//prefixes.n3>;

This was the solution in my case.

Mariano Rico
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We had the same issue, and we fixed it by adding the prefixes in Pubby's config.ttl file, just before everything else. For example:

 ##Declare all your prefixes here
 @prefix geosparql: <http://www.opengis.net/ont/geosparql#>.
 @prefix geo-ont: <http://www.oeg-upm.net/ontologies/geo#>.

 ##Pubby config.ttl file starts here
 # Server configuration section
 <> a conf:Configuration;
     # Project name for display in page titles
     conf:projectName "nameOfOurProject";
     # Homepage with description of the project for the link in the page header
     conf:projectHomepage <http://projectHomePage.com>;
 ....

I hope this helps

Daniel Garijo
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