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Linked data-sets tend to be hard to explore, especially through SPARQL. Are there approaches to quickly check what is in a data-set, and draw simple charts and graphs out of it?

An initial approach based on Google Chart, taking as input the address of a SPARQL endpoint and a SPARQL query is demonstrated at http://data.open.ac.uk/applications/data-report.html

Is there any other tool of the sort?

asked 23 Jan '11, 20:23

mdaquin's gravatar image

mdaquin
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edited 23 Jan '11, 21:40

psychemedia's gravatar image

psychemedia ♦♦
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The SPARQLproxy service at http://data-gov.tw.rpi.edu/ws/sparqlproxy.php will optionally transform the result of a SPARQL query to an arbitrary endpoint to either Google Viz/JSON or MIT Exhibit/JSON formats that I'm guessing should play nicely with the corresponding widget sets?

If anyone has demos featuring the rendering of data using either of these formats in the corresponding frameworks (e.g. Google Charts API, or SIMILE widgets) it'd be great to see example code in additional answers to this question...

link

answered 23 Jan '11, 21:48

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psychemedia ♦♦
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I've used Simile before for a couple of mashups. Essentially I combined a few linked data sources into a triple store, performed some SPARQL queries and massaged the JSON results so they were Similie friendly. I didn't use the SPARQL proxy as I wasn't aware it existed - so thanks for pointing it out.

One mashup is based on my family tree and the other on radio 6 playlists. Both provide faceted browsers, and in the family tree mashup I plot places of birth for family members on a map. The radio 6 example has no visualisation as such. Here are some URLs:

http://www.johngoodwin.me.uk/mashups/6radio.html

http://www.johngoodwin.me.uk/mashups/family.html

The json for the radio 6 mashup is here:

http://www.johngoodwin.me.uk/mashups/artist-genre.js

http://www.johngoodwin.me.uk/mashups/brand-prog.js

http://www.johngoodwin.me.uk/mashups/prog-artist.js

The json for the family tree is here:

http://www.johngoodwin.me.uk/mashups/family.js

Hope these are of some help.

link

answered 25 Jan '11, 08:32

John%20Goodwin's gravatar image

John Goodwin
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accept rate: 25%

edited 25 Jan '11, 09:43

There's a lot to be said for using HTML and CSS to create simple barcharts. Transformation of SPARQL results to HTML is straightforward and the result has minimal size, is accessible, interactive and linkable. There are some examples on this little XQuery project

link

answered 27 Jan '11, 15:02

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kitwallace
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accept rate: 13%

another approach based on an initial chart vocabulary was initiated by DERI: http://ld2sd.deri.org/chartr/

link

answered 23 Jan '11, 20:27

mdaquin's gravatar image

mdaquin
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edited 23 Jan '11, 21:40

psychemedia's gravatar image

psychemedia ♦♦
1.1k323961

kidehen created and creates many Linked Data based visualisations with PivotViewer.

link

answered 27 Jan '11, 23:08

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zazi
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Asked: 23 Jan '11, 20:23

Seen: 1,530 times

Last updated: 27 Jan '11, 23:08

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