September 2013
Intermediate to advanced
114 pages
2h 51m
English
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Appendix A. Regular Expressions and GREL
Two more utilities are available in the advanced OpenRefine user's toolbox: regular expressions and GREL. Regular expressions are patterns for matching and replacing text that come in very handy when dealing with large quantities of data. The General Refine Expression Language, GREL, gives you access to a bit of programming power for those cases where a specialized manipulation is necessary. This appendix will introduce you to both techniques.
Regular expressions for text patterns
OpenRefine offers many ways to find the data you need. But what if you don't know the exact text, or more commonly with large datasets, what if the text slightly varies from cell-to-cell? While finding all cells with a value that ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.