This is the RefinePro knowledge base about OpenRefine. We build it over the years, and keep adding to it. From great tutorials and how-to, to handy GREL expressions and links to external resources, you will find here one of the most comprehensive list of resources to learn OpenRefine.

For a comprehensive documentation you should refer to the official OpenRefine wiki.

Don't where to get started? Search for a specific function below, or read our most popular article from the right side menu.

Showing posts with label facetCount. Show all posts
Showing posts with label facetCount. Show all posts

26.4.12

Data exploration tutorial with google refine

Recently, Hugh Stimson published a great article: Data Mining My Old Radio Playlists. His post mix tutorials on php scripting, data cleaning with google refine and data analysis with PostgreSQL.

This answer post demonstrate that data analysis is fully doable in google refine using really basic function (I'll be using GREL function only once for the long tail analysis). I guess also this post is a good illustration of my previous post on data exploration using google refine.

29.11.11

facet by facet count


Google refine offers the possibilities to facet by name or choice count. This can be useful to focus an analysis or transformation only on value having more than twenty records for example.

8.9.11

countif in google refine with facetCount

Countif is an expression in Excel that count every time a value appears in a determine zone of your spreadsheet. Google refine support the same function to count every time a value appears in a column.